THYROID Panel (TSH + Free T3 + Free T4)
This panel includes comprehensive testing of the thyroid stimulating hormone (TSH) in addition to free thyroxine (T4) and free triiodothyronine (T3). This thyroid panel offers a lower cost than buying each hormone separately. If you take biotin, please wait at least 8 hours to get blood drawn. A study found that TSH was suppressed in all subjects after food, so fasting may be suggested although it is not reqired by Quest. Free T4 and Free T4 values did not change significantly after eating.
Thyroid hormones regulate our body's metabolism and influence virtually every organ system in the body. They tell organs how fast or slow they should work. Thyroid hormones also regulate the body's consumption of oxygen and production of heat. Thyroid problems, such as an overactive or underactive thyroid, can severely affect metabolism. This panel includes comprehensive testing of the thyroid-stimulating hormone (TSH) in addition to free thyroxine (T4) and free triiodothyronine (T3). When the thyroid gland does not produce enough hormone, the body uses energy slower than it should. This condition, underactive thyroid, is called hypothyroidism. Panel includes:
- TSH
- Free T3
- Free T4
A study found that TSH was suppressed in all subjects after food, so fasting may be suggested, although Quest does not require it. Free T4 and Free T4 values did not change significantly after eating.
You can add reverse T3 and thyroglobulin antibody and anti-TPO antibodies by adding those tests to your cart.
Lab Test Collection Instructions
Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.
IMPORTANT: Discounted Labs only serves these states: Find a Location
HOW DOES DISCOUNTEDLABS.COM WORK?
1- Go to the "Find a Location" page to find the closest Quest lab location.
2- Go to "Choose a Test" and add your selection (s) in the shopping cart.
3- If you have a discount coupon code, add it to your cart.
4- Pay using a credit card.
5- You will receive an order confirmation and a lab request form by email.
6- Print lab request form attached to the lab request form email (PDF file).
7- Take that form to the closest lab with a picture ID. Get your blood drawn. No lab fee is required.
8- Your results will be emailed to you within 5-7 business days (depending on the test).
HOW DOES DISCOUNTEDLABS.COM WORK?
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Go to the "Find a Location" page to find the closest lab location. No need to make an appointment since walk-ins are welcomed. Once you have identified your closest location, go to step 2.
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Go to "Choose a Test" and add your selection (s) in the shopping cart. If you prefer to save money on bundled tests, we have created "Lab Test Panels" that can help you decide what to order.
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If you have a discount coupon code, add it to your cart.
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A $8 lab processing fee will be added to your total.
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Pay using a credit card.
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You will receive an order confirmation and instructions email on how to download your lab request.
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Print lab request form that you downloaded.
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Take that form to the closest location. Get your blood drawn.
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You will receive an email when the results are ready for you to download.
Note: You cannot place an order under someone else's profile. The profile person's name will appear on the lab order form.If you have further questions, please email [email protected].
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