What's this test for?

This test is ideal if you're experiencing unexplained fatigue, sudden weight changes, mood swings, or sensitivity to temperature. It helps identify whether your thyroid gland is producing the right amount of hormones that control your metabolism, energy levels, and overall well-being. Many people use this test when they suspect their symptoms are thyroid-related but want concrete answers about their hormone levels.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your thyroid hormone levels mean for your energy, metabolism, and overall health. These notes include personalized recommendations like dietary changes, supplement suggestions, or whether you should consider consulting an endocrinologist. You'll also get the standard lab report and can track your thyroid levels over time using our trends feature to see how your interventions are working.

What's included in this test?

This panel measures T4 (Thyroxine) Total, T3 (Tri-iodothyronine) Total, and the Free T4 Index (T7). T4 is the main hormone your thyroid produces and acts as a storage form, while T3 is the active hormone that directly affects your metabolism and energy. Together, these measurements help identify whether you're producing too much or too little thyroid hormone, which can explain symptoms like weight changes, fatigue, and mood issues.

How should I prepare for this test?

No special preparation is typically required for this thyroid test, and fasting is not necessary. However, if you're taking thyroid medication or biotin supplements, inform your healthcare provider as these can affect results. It's best to take the test at the same time of day if you're monitoring levels over time, as thyroid hormones can fluctuate slightly throughout the day.

When will I get my results?

Most thyroid test results are available within 1-2 business days after your blood sample reaches the lab. You'll receive an email notification when your results are ready to view online. Complex cases or tests requiring additional analysis may occasionally take a bit longer, but the standard turnaround for T4 and T3 testing is quick.

Who should consider getting this test?

This test is ideal for people experiencing unexplained fatigue, weight changes that don't respond to diet or exercise, mood swings, or temperature sensitivity. It's also important for women who are pregnant or trying to conceive, anyone with a family history of thyroid disease, and people already on thyroid medication who need monitoring. If you're feeling off but can't pinpoint why, checking your thyroid is a smart first step.

What symptoms indicate I may need this test?

Common symptoms include persistent fatigue even after adequate sleep, unexplained weight gain or difficulty losing weight, feeling unusually cold or hot, dry skin and hair loss, mood changes like depression or anxiety, and muscle weakness. You might also notice changes in heart rate, irregular periods in women, or difficulty concentrating and brain fog.

How can I naturally support my thyroid function?

Supporting thyroid health starts with ensuring adequate iodine and selenium intake through foods like fish, eggs, Brazil nuts, and dairy. Getting enough quality sleep, managing stress through yoga or meditation, and exercising regularly can help balance thyroid hormones. Limiting processed foods and gluten may also help, and avoiding excessive soy products is recommended if you have thyroid issues.

What does high T4 or T3 mean?

High T4 or T3 levels typically indicate hyperthyroidism, meaning your thyroid is overactive and producing too much hormone. This can cause symptoms like unexplained weight loss, rapid heartbeat, anxiety, sweating, and feeling overly warm. Common causes include Graves' disease, thyroid nodules, or taking too much thyroid medication.

What does low T4 or T3 mean?

Low T4 or T3 levels suggest hypothyroidism, where your thyroid isn't producing enough hormone. This can lead to fatigue, weight gain, feeling cold, depression, dry skin, and constipation. The most common cause is Hashimoto's thyroiditis, an autoimmune condition, but it can also result from iodine deficiency or previous thyroid treatment.

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.

Thyroid Test - Weight & Energy Issues | T4 & T3

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]

Thyroid Test for Weight Changes and Fatigue

Thyroxine (T4) Total and Tri-iodothyronine (T3) Total

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.

Thyroid Test for Weight Changes and Fatigue

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