rT3
Serum
Sample type
12h
Report Time
1
Parameters
ISO
Certified
Free Home Sample Collection
Our trained phlebotomist will visit your home
About This Test
rT3: Measures reverse T3, an inactive form of thyroid hormone formed during illness or stress. rT3 testing can help interpret complex thyroid function patterns, especially when symptoms don’t match standard TSH/FT4 results. Useful in evaluating non-thyroidal illness effects.
Test Details
Preparation Required
Fasting not required unless advised.
Method/Technology
CLIA
Sample Type
Serum
Report Turnaround Time
12 hours
Parameters Included (1)
rT3
What's Included
Frequently Asked Questions
Important Note
Values may vary depending on method used. Clinical correlation required.
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