Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
In hospitalized or sick patients with low triiodothyronine (T3) values, elevated reverse triiodothyronine (rT3) values are consistent with "sick euthyroid" syndrome. Also, the finding on an elevated rT3 level in a critically ill patient helps exclude a diagnosis of hypothyroidism.
9 - 27.0 ng/dL
4 - 6 days
- Triiodothyronine, Reverse
- Reverse T3 (Triiodothyronine)
- T3 (Triiodothyronine), Reverse
- Reverse T3, S
Collect specimen in a red top tube. Centrifuge, aliquot serum into a plastic vial within 2 hours of collection, and refrigerate.
Test sent to Warde Medical Laboratory.