What's this test for?

This test is ideal if you're experiencing digestive issues alongside symptoms like unexplained fatigue, mood swings, weight changes, or temperature sensitivity. It helps identify the connection between gut health and thyroid function, as emerging research shows that inflammation and gut imbalances can directly affect thyroid hormones and energy levels. Many people use this test when they have both digestive complaints and thyroid-related symptoms but want to understand how they're connected.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your thyroid and gut health markers mean for your energy, digestion, and mood. These notes include personalized recommendations like dietary changes, gut-healing protocols, stress management techniques, or whether you should consider thyroid medication or further evaluation. You'll also get the standard lab report and can track your thyroid and inflammation levels over time using our trends feature to see how your interventions are working.

What's included in this test?

This panel measures TSH, Free T4 Index, Total T4, T3 Uptake, Thyroid Peroxidase Antibodies, Thyroglobulin Antibodies, Serotonin, High-Sensitivity CRP, and Sedimentation Rate. This comprehensive panel evaluates your thyroid function through TSH, Free T4, Total T4, and T3 uptake to identify causes of fatigue and weight changes. It checks for autoimmune thyroid disease with TPO and thyroglobulin antibodies, measures serotonin levels which impact both gut function and mood, and assesses inflammation through CRP and sedimentation rate that can affect both digestive and thyroid health. Together, these measurements reveal how your gut and thyroid are influencing each other and affecting your overall well-being.

How should I prepare for this test?

You do not need to fast for this test. However, you should avoid tobacco, tea, and coffee for three days before your blood draw. Also avoid foods high in indoles including avocado, banana, tomato, plum, walnut, pineapple, and eggplant for three days prior, as these can affect serotonin measurements. Follow your normal medication routine unless instructed otherwise by your doctor.

When will I get my results?

You can expect your results within approximately 6 business days after your blood sample is collected. In some cases, if confirmation testing is required for any of the markers, the turnaround time may be extended slightly. You'll be notified as soon as your complete results are available in your account.

Who should consider getting this test?

This test is ideal for people experiencing both digestive problems and thyroid-related symptoms like fatigue, weight changes, or mood issues. It's especially useful if you have irritable bowel symptoms, food sensitivities, or chronic inflammation alongside low energy or difficulty concentrating. Anyone with a family history of thyroid disease or autoimmune conditions who also struggles with gut health should consider this comprehensive assessment.

What symptoms indicate I may need this test?

Common symptoms include persistent digestive issues like bloating, constipation, or diarrhea combined with unexplained weight changes, constant fatigue, feeling unusually cold or hot, mood swings, brain fog, or difficulty sleeping. You might also notice thinning hair, dry skin, irregular periods, or feeling anxious or depressed alongside digestive complaints. These overlapping symptoms suggest your gut and thyroid may be affecting each other.

How can I naturally support my gut-thyroid connection?

Start by healing your gut with probiotic-rich foods like yogurt, kefir, sauerkraut, and kimchi, while avoiding inflammatory foods like excessive sugar and processed items. Ensure adequate iodine and selenium intake through fish, eggs, Brazil nuts, and dairy to support thyroid function. Managing stress through meditation, yoga, or deep breathing is crucial since stress hormones affect both gut and thyroid health. Getting 7-8 hours of quality sleep and regular moderate exercise also support both systems.

What do thyroid antibodies mean and why do they matter?

Thyroid antibodies (TPO and thyroglobulin) indicate that your immune system is attacking your thyroid gland, a condition called autoimmune thyroid disease or Hashimoto's thyroiditis. This matters because it's the most common cause of hypothyroidism and can explain why you might feel tired, gain weight, or have mood changes even if your basic thyroid levels seem normal. Identifying antibodies early allows you to take steps to reduce inflammation and potentially slow the progression of thyroid damage.

What does high inflammation mean for my gut and thyroid?

Elevated inflammation markers like CRP and sedimentation rate suggest your body is experiencing chronic inflammation, which can damage the gut lining and interfere with thyroid hormone production and conversion. Gut inflammation can trigger or worsen autoimmune thyroid conditions, while thyroid dysfunction can slow digestion and promote bacterial overgrowth. Reducing inflammation through diet, stress management, and healing the gut is essential for restoring both digestive and thyroid 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! 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.

Gut & Thyroid Test - Digestion, Energy & Mood Issues

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]

Blood Test for Digestive Issues, Fatigue, and Mood Changes

Gut-Thyroid Axis Panel

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

90 day happiness guarantee

Prescription & fees included

Easy to understand results

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.

Blood Test for Digestive Issues, Fatigue, and Mood Changes

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

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