STTM TSH, Free T3, Free T4 Blood Test
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What’s Being Tested:
- TSH
- Unbound (free) T3
- Unbound (free) T4
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Fasting:Â No
Specimen Type: Blood (Draw Location | How It Works | FAQs)
Turnaround time:Â 5-7 Business Days
Important Notes:
- If you’re using a supplement that includes biotin, which is also known as vitamin B7, B8, vitamin H, or coenzyme R, and is commonly found in products that promote the health of nails, skin, and hair, it is advisable to refrain from sample collection for a minimum of 72 hours after your last dose.
- This test cannot be collected in NY, NJ, MA, and RI. Contact us with questions.