What's this test for?

This test is ideal if you're experiencing unexplained fatigue, mood changes, or concerns about how your body processes protein. It measures phenylalanine, an amino acid your body uses to build proteins and make important brain chemicals. It's also useful for monitoring diet-related conditions where amino acid balance matters.

How should I prepare for this test?

How can I naturally support healthy amino acid balance? Eating a varied diet with adequate but not excessive protein helps keep amino acid levels like phenylalanine steady. Staying hydrated and avoiding crash diets or extreme fasting can also help your body maintain a stable balance. If you take supplements containing artificial sweeteners like aspartame, being mindful of intake may help since aspartame breaks down into phenylalanine.

What's included in this test?

This test measures your blood level of phenylalanine, a building-block amino acid that plays a role in protein production and the creation of key brain signaling chemicals. Tracking this single marker helps you understand how well your body is processing protein from your diet and whether your levels fall within a healthy range.

What happens after I get my results?

Your results will show up in your account with the normal range for phenylalanine clearly explained next to your value. If your level falls outside the expected range, the report will point you toward simple next steps like adjusting your protein intake or retesting after a few weeks to track changes. You can download a standard lab report anytime from your account, and the trends feature lets you compare results over multiple tests to see how your levels shift over time.

When will I get my results?

Results are typically ready within about 7 days of your lab visit. Once processed, they're posted directly to your secure online account, where you can view your value alongside the reference range. You'll get a notification as soon as your report is available so you don't need to keep checking manually.

Who should consider this test?

This test is a good fit for people who want to understand their amino acid balance, including those tracking dietary protein processing or general nutritional health. It can also be useful if you're curious about how your body handles compounds found in certain foods or artificial sweeteners. Anyone working on optimizing their diet with more precise data may benefit from checking this marker.

What symptoms indicate I may need this test?

Signs that might prompt this test include unusual fatigue, difficulty concentrating, or mood swings that don't have an obvious cause. Some people also consider this test if they notice symptoms after eating high-protein foods or products with artificial sweeteners. If you have a family history of amino acid processing issues, checking this marker can offer useful information.

What is phenylalanine and why does it matter?

Phenylalanine is a building-block amino acid that your body gets from food and uses to make proteins and important brain chemicals like dopamine. It matters because having too much or too little can affect energy, mood, and how your body functions overall. Keeping this amino acid in a healthy range supports normal nervous system and metabolic function.

What does high phenylalanine mean?

A higher than normal result means your body has more of this amino acid circulating than expected, which can sometimes relate to how much protein you're eating or how efficiently your body processes it. Simple steps like moderating protein intake and staying hydrated can help bring levels back toward normal. If your result is significantly elevated, retesting and seeking medical care is a reasonable next step to rule out underlying processing issues.

What does low phenylalanine mean?

A lower than expected result may mean your diet isn't providing enough protein or that your body is using it up faster than usual. Adding more balanced protein sources to your meals and retesting in a few weeks can help you see if levels improve. If fatigue or other symptoms persist despite dietary changes, it's worth exploring further.

Getting your blood test with us is easy, private & backed by the power of science.Long story short: In the test options, use the filters or search box to narrow your choices and find the test you want. 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. 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. 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. 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. 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. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com 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 support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

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 support@privatemdlabs.com. 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 support@privatemdlabs.com.

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 support@privatemdlabs.com. 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 support@privatemdlabs.com and we'll gladly help you.

Phenylalanine Test - Amino Acid & Protein Health

Getting your blood test with us is easy, private & backed by the power of science.

Long story short:

In the test options, use the filters or search box to narrow your choices and find the test you want.
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.
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.
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.
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.
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.
You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!

754-799-7833

[email protected]

Phenylalanine Blood Test for Amino Acid Balance

Phenylalanine

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

What's this test for?

How should I prepare for this test?

What's included in this test?

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

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Phenylalanine Blood Test for Amino Acid Balance

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

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