Why Private MD Labs?
90-day money-back guarantee Lab order in minutes Save a trip to the doctor Low prices since 2005 Labs within 2 miles
Private MD Labs logo
Text us 754-799-7833 👈 text only
100% private
Find labs How it works FAQ Sign Up

Biotin (Vitamin B7)

Insights Insights

Your biotin levels are normal. This is a good sign as biotin plays an important role in many bodily functions, including metabolism and maintaining healthy skin, hair, and nails. Keep up a balanced diet to ensure your body gets all the necessary vitamins and minerals.
Biotin (Vitamin B7)
good
Low Desirable 221.0 – 3004.0 High
517.4 pg/mL

Note: Reference Range: Pediatric < 12 yrs: 100.0 - 2460.2 pg/mL Adult > or = 12 yrs: 221.0 - 3004.0 pg/mL The performance characteristics of the listed assay was validated by BioAgilytix Diagnostics. The US FDA has not approved or cleared this test. The results of this assay can be used for clinical diagnosis without FDA approval. BioAgilytix Diagnostics is a CLIA certified, CAP accredited laboratory for performing high complexity assays such as this one.

Carotene

Insights Insights

Your carotene levels are normal, which is a good sign. Research shows that carotene is a type of antioxidant that can be found in fruits and vegetables, and it has been linked to a reduced risk of chronic diseases. It's recommended that you continue to eat a diet rich in carotene-containing foods to maintain your current levels.
Carotene
good
Low Desirable 6 – 77 High
61 mcg/dL

Note: Vitamin supplementation within 24 hours prior to blood draw may affect the accuracy of the results. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute Chantilly, VA. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Vitamin A (Retinol)

Insights Insights

Your Vitamin A (retinol) test is within the normal range for your age and sex, which is good news. Research shows that Vitamin A is an important nutrient that supports vision health, immune function and normal growth and development. It's recommended that you maintain a healthy, balanced diet to ensure adequate intake of Vitamin A and other essential nutrients.
Vitamin A (Retinol)
good
Low Desirable 38 – 98 High
42 mcg/dL

Note: (Note) **Clin Chem Vol. 34.No.8. pp1625-1628. 1998 Vitamin supplementation within 24 hours prior to blood draw may affect the accuracy of results. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes. MDF med fusion 2501 South State Highway 121,Suite 1100 Lewisville TX 75067 972-966-7300 Ithiel James L. Frame, MD, PhD

Vitamin B1 (Thiamine)

Insights Insights

Your vitamin B1 levels are normal, which is great news. Adequate intake of vitamin B1 is important for your overall health and well-being. It's recommended that you continue to consume foods high in vitamin B1, such as whole grains, pork, and beans, to maintain your levels.
Vitamin B1 (Thiamine), Blood, LC/MS/MS
good
Low Desirable 78 – 185 High
110 nmol/L

Note: (Note) Vitamin supplementation within 24 hours prior to blood draw may affect the accuracy of the results. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes. MDF med fusion 2501 South State Highway 121,Suite 1100 Lewisville TX 75067 972-966-7300 Ithiel James L. Frame, MD, PhD

Vitamin B12/Folate

Insights Insights

Your Vitamin B12 and Folate levels are within the normal range. This is positive news as it indicates that your body has adequate levels of these important nutrients. Maintaining normal levels of Vitamin B12 and Folate is crucial for the proper functioning of your body, including the production of red blood cells and the health of your nervous system. Research shows that Vitamin B12 is primarily found in animal-based foods and plays a key role in maintaining the health of your nerves and blood cells. Folate, on the other hand, is found in a variety of foods, including leafy green vegetables, fruits, and legumes. It is essential for DNA synthesis and cell division. It's recommended that you continue to consume a balanced diet containing foods rich in Vitamin B12 and Folate to ensure that your levels remain within the normal range. If you have any concerns or questions about your blood test results, I would advise you to consult with your healthcare provider for further guidance. Keep up the good work in maintaining a healthy lifestyle!
Vitamin B12
good
Low Desirable 200 – 1100 High
616 pg/mL
Folate, Serum
good
10.0 ng/mL

Note: Reference Range Low: <3.4 Borderline: 3.4-5.4 Normal: >5.4

Vitamin B2 (Riboflavin)

Insights Insights

Your vitamin B2 levels are normal, which is good news. Adequate levels of vitamin B2 are important for many biological processes in the body, including energy production and maintenance of healthy skin and eyes. Keep up a balanced diet to ensure you continue to get sufficient levels of this nutrient.
Vitamin B2 (Riboflavin)
good
Low Desirable 6.2 – 39.0 High
19.5 nmol/L

Note: Vitamin supplementation within 24 hours prior to blood draw may affect the accuracy of results. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute, Chantilly, VA. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Vitamin B3

Insights Insights

Your Vitamin B3 levels are within normal range, which is a positive result. Research shows that Vitamin B3 is important for overall health, as it helps convert food into energy and is essential for a healthy nervous system. It's recommended that you continue to maintain a balanced and nutritious diet to ensure your Vitamin B3 levels remain within range.
Nicotinamide
good
36 ng/mL

Note: Nicotinamide is a metabolite of nicotinic acid. Due to the large variability in the metabolism of nicotinic acid, plasma concentrations of this metabolite are variable. In one study, fasting plasma concentrations were reported to be approximately 40 ng/mL. In another study it was reported that the administration of a single 1000 mg of extended-release tablet of nicotinic acid resulted in a mean peak nicotinamide concentration of 400 ng/mL between 5 and 10 hours post dose, decreasing to about 100 ng/mL by 16 hours post dose. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute, Chantilly, VA. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Nicotinic Acid
good
<20 ng/mL

Note: Due to the large variability in the metabolism of nicotinic acid, the dosing preparation used (immediate- release vs. extended release), and the mg doses used the serum concentrations may range from less than 20 ng/mL to about 30,000 ng/mL. After oral administration of an immediate-release tablet, peak plasma concentrations occur in 4 to 5 hours. The plasma half-life of nicotinic acid is about one hour. In one study, fasting plasma concentrations were reported to be less than 20 ng/mL. In another study, it was reported that the administration of a single 1000 mg extended-release tablet resulted in mean nicotinic acid concentrations of less than 50 ng/mL. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute, Chantilly, VA. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Vitamin B5 (Pantothenic Acid)

Insights Insights

Your vitamin B5 levels are normal. This is good news, as vitamin B5 plays an important role in energy metabolism and the production of hormones and cholesterol. Research shows that maintaining healthy levels of vitamin B5 can help support your overall health and wellbeing. It's recommended that you continue to eat a balanced diet that includes foods rich in vitamin B5, such as avocados, mushrooms, and whole grains, to ensure you're getting enough of this essential nutrient.
Vitamin B5 (Pantothenic Acid)
good
Desirable < 275 High
56 ng/mL

Note: This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute, Chantilly, VA. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Vitamin B6

Insights Insights

Your Vitamin B6 level is high, which means that you have more than the normal amount of this vitamin in your blood. While this is generally not a concern, it's important to note that extremely high levels can sometimes cause nerve damage. It's recommended that you speak with your healthcare provider about any supplements or multivitamins you may be taking to ensure that you're not exceeding the recommended daily intake.
Vitamin B6, Plasma
high
Low Desirable 2.1 – 21.7 High
37.9 ng/mL

Note: (Note) Vitamin supplementation within 24 hours prior to blood draw may affect the accuracy of results. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes. MDF med fusion 2501 South State Highway 121,Suite 1100 Lewisville TX 75067 972-966-7300 Ithiel James L. Frame, MD, PhD

Vitamin C

Insights Insights

Your Vitamin C test result is normal. It's recommended that you maintain a balanced diet that includes enough Vitamin C to support immune function, tissue repair, and collagen production. Research shows that Vitamin C also has antioxidant properties that can reduce the risk of chronic diseases.
Vitamin C
good
Low Desirable 0.2 – 2.1 High
0.9 mg/dL

Note: This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute, Chantilly, VA. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Questassured(TM) 25 Hydroxyvitamin D(D2,D3)

Insights Insights

Your levels of Vitamin D, specifically 25-hydroxyvitamin D (D2 and D3), appear to be within the normal range. This is good news, as Vitamin D plays a crucial role in maintaining healthy bones and immune function. Research shows that maintaining appropriate levels of Vitamin D is important for overall health. It's recommended that you continue to engage in activities that promote Vitamin D synthesis, such as spending time in the sunlight or consuming foods rich in this vitamin. However, it's always a good idea to discuss your specific health needs with your healthcare provider. If you have any concerns about your Vitamin D levels or any other aspect of your blood test, I encourage you to reach out to your healthcare provider for further discussion and guidance. They will have a comprehensive understanding of your medical history and can provide personalized recommendations to support your overall well-being.
Vitamin D, 25-OH, Total
good
Low Desirable 30 – 100 High
50 ng/mL

Note: Vitamin D, 25-Hydroxy reports concentrations of two common forms, 25-OHD2 and 25-OHD3. 25-OHD3 indicates both endogenous production and supplementation. 25-OHD2 is an indicator of exogenous sources such as diet or supplementation. Therapy is based on measurement of Total 25-OHD, with levels <20 ng/mL indicative of Vitamin D deficiency, while levels between 20 ng/mL and 30 ng/mL suggest insufficiency. Optimal levels are > or = 30 ng/mL. For additional information, please refer to http://education.QuestDiagnostics.com/faq/FAQ199 (This link is being provided for informational/ educational purposes only.)

Vitamin D, 25-OH, D3
good
50 ng/mL

Note: This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute Chantilly, VA. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Vitamin D, 25-OH, D2
good
<4 ng/mL

Note: This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute Chantilly, VA. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Vitamin E (Tocopherol)

Insights Insights

Your Vitamin E (Tocopherol) blood test results are all within the normal range, which is great news. Vitamin E is important for maintaining healthy skin, eyes, and immune system. Research shows that Vitamin E has antioxidant properties that can protect cells from damage caused by free radicals. It's recommended that you continue to consume sources of Vitamin E in your diet, such as nuts and seeds, and leafy green vegetables. Keep up the good work!
Vitamin E, Beta Gamma Tocopherol
good
Desirable < 4.4 High
<1.0
mg/L

Note: (Note) Vitamin supplementation within 24 hours prior to blood draw may affect the accuracy of results. This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes. MDF med fusion 2501 South State Highway 121,Suite 1100 Lewisville TX 75067 972-966-7300 Ithiel James L. Frame, MD, PhD

Vitamin E, Alpha Tocopherol
good
Low Desirable 5.7 – 19.9 High
14.4 mg/L

Note: Levels of alpha-tocopherol <5 mg/L are consistent with Vitamin E deficiency in adults.

Vitamin K

Insights Insights

Your vitamin K levels are normal, which is great news. Vitamin K is important for blood clotting and bone health, among other things. It's recommended that adults get between 90-120 micrograms of vitamin K per day, which you seem to be meeting. Keep up the good work with your diet!
Vitamin K
good
Low Desirable 130 – 1500 High
548 pg/mL

Note: This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics Nichols Institute Chantilly, VA. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Sample image
Sample report
Comprehensive vitamin panel for identifying nutritional deficiencies causing fatigue and low energy

Blood Test for Fatigue and Vitamin Deficiency

Vitamin Vitality

Google
3,138 reviews
  • Reveal hidden vitamin deficiencies effortlessly
  • Pinpoint the cause of your fatigue
  • Enhance your wellness with precise insights
$1601 Example results
First results as soon as overnight*

90 day happiness guarantee

We stand behind our service

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

90 day happiness guarantee

We stand behind our service

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

What's this test for?

This test is ideal if you're experiencing unexplained fatigue, weakness, low energy, or persistent tiredness that doesn't improve with rest. It helps identify vitamin deficiencies that may be affecting your energy levels, immune function, metabolism, and overall wellness. Many people use this test when they suspect nutritional gaps are impacting their health but want concrete answers about which vitamins they're lacking.

How should I prepare for this test?

Fasting: 8 hours
No biotin: 72 hours

You should fast for 8 hours before your blood draw, consuming only water during this time. Avoid taking multivitamins, vitamin supplements, and biotin for at least 72 hours prior to testing, and refrain from eating liver, fruits, or taking vitamin C and vitamin K supplements for 24 hours before collection. These precautions ensure accurate measurement of your body's true vitamin levels rather than recent supplement intake.

What's included in this test?

Vitamin C Carotene Vitamin B2 (Riboflavin) Vitamin K Biotin (Vitamin B7) Vitamin B1 (Thiamine), Blood, LC/MS/Ms Vitamin B5 (Pantothenic Acid) Vitamin A (Retinol) Vitamin B6

This comprehensive panel evaluates all essential vitamins including the complete B-vitamin complex (B1, B2, B3, B5, B6, B7, B12, and folate), fat-soluble vitamins (A, D, E, K), and vitamin C. These vitamins play crucial roles in energy production, immune function, bone health, nervous system support, and cellular metabolism. Together, these measurements provide a complete picture of your nutritional status and help identify specific deficiencies that may be causing fatigue, weakness, poor immune function, or other health concerns.

What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining what your vitamin levels mean for your energy, immunity, and overall health. These notes include personalized recommendations like dietary changes, specific vitamin supplements to consider, and lifestyle adjustments to optimize your nutritional status. You'll also get the standard lab report and can track your vitamin levels over time using our trends feature to see how your dietary improvements and supplementation are working.
When will I get my results?
Results are typically available within 21 business days after your blood sample is collected. This extended turnaround time allows for comprehensive analysis of all vitamin levels using specialized testing methods. If any confirmation testing is required for accuracy, the timeline may be slightly extended, but you'll be notified of any delays.
Who should consider getting this test?
This test is ideal for people experiencing chronic fatigue, weakness, or low energy that doesn't improve with rest. It's also valuable for those with restrictive diets (vegan, vegetarian), digestive issues that affect nutrient absorption, frequent illness, or anyone who wants to optimize their nutritional status and athletic performance. People taking certain medications or with conditions affecting nutrient absorption should also consider comprehensive vitamin testing.
What symptoms indicate I may need this test?
Common symptoms of vitamin deficiencies include persistent fatigue and low energy, frequent infections or slow wound healing, muscle weakness or cramping, mood changes or brain fog, and tingling in hands or feet. Other signs include brittle hair and nails, pale skin, digestive issues, poor night vision, or unexplained bone pain. If you're experiencing several of these symptoms, vitamin deficiencies could be a contributing factor.
How can I naturally improve my vitamin levels?
Focus on eating a varied, colorful diet rich in whole foods including leafy greens, colorful vegetables, fruits, whole grains, lean proteins, and healthy fats. Get regular sunlight exposure for vitamin D, include fermented foods for B vitamins, and eat nuts, seeds, and fish for vitamin E. Limit processed foods and alcohol which can deplete vitamins, manage stress which increases vitamin needs, and ensure adequate sleep for proper nutrient absorption and utilization.
What causes vitamin deficiencies?
Vitamin deficiencies can result from poor diet quality or restrictive eating patterns, digestive disorders that impair nutrient absorption (like celiac disease or Crohn's), certain medications that interfere with vitamin uptake, and increased needs during pregnancy or periods of stress. Chronic alcohol consumption, aging, and genetic factors affecting nutrient metabolism can also contribute. Some people simply don't absorb or convert certain vitamins efficiently even with adequate intake.
How often should I retest my vitamin levels?
If you're addressing a known deficiency with supplements or dietary changes, retest in 8-12 weeks to confirm your levels are improving. Once your levels are optimized, annual testing is recommended to ensure you're maintaining healthy vitamin status. If you have ongoing health conditions, take medications affecting nutrient absorption, or follow restrictive diets, more frequent testing every 3-6 months may be beneficial to monitor your nutritional status.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
  3. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
  4. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
  5. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
  6. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
    8. If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.
How do I know which test to get?
In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at [email protected], and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at [email protected]. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Only HSA & FSA is accepted.

Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email [email protected].
Can I cancel my order?
Yes.

We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email [email protected].

You can read more about our cancellation policy here.
How can I find a lab location near me?
During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Instant orders, results often overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
Vitamin D, 25-Hydroxy 22 ng/mL
Demo results
Low Optimal 30 - 100 High
22 ng/mL

What this means

Your vitamin D level is below the optimal range, which is common especially during winter months or with limited sun exposure. Low vitamin D can contribute to fatigue, weakened immunity, mood changes, and over time may affect bone health and muscle strength.

Recommended actions

Get 10-30 minutes of midday sunlight exposure several times per week when possible

Include vitamin D-rich foods like fatty fish (salmon, mackerel), egg yolks, and fortified dairy

Consider a vitamin D3 supplement of 2000-4000 IU daily after consulting with your doctor

Retest in 8-12 weeks after making dietary changes or starting supplementation

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Blood Test for Fatigue and Vitamin Deficiency

Google
3,138 reviews
  • Reveal hidden vitamin deficiencies effortlessly
  • Pinpoint the cause of your fatigue
  • Enhance your wellness with precise insights
$1601 Example results

1,000,000+ blood tests later, here's what our customers say

Youtube Video Youtube Video
Sean H.
1 year ago

Much love for private md labs. I am an athlete and bodybuilder. I diet hard and train hard so I like to get bloodwork done 4x a year to check my lipid...
Youtube Video Youtube Video
Amber M.
1 year ago

I am so impressed with my experience! I had 12 tests done and within seconds of paying, I already had my appointment scheduled with an awesome QR code...
Youtube Video Youtube Video
Darryl S.
1 year ago

I was skeptical at first about scheduling labs online but this process was quick and easy. Best thing I liked was how you could custom tailor your lab...
Google reviews 3138 reviews Next
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.