Laboratory Services

T3 (Triiodothyronine), Reverse, Serum

Name: Incyte Diagnostics
Address: 13103 E Mansfield Ave, Spokane Valley, Washington, 99216, USA
Telephone: +1-509-892-2700

Test Description	T3 (Triiodothyronine), Reverse, Serum
Test ID	RT3
General Information	Useful for diagnosis of Sick-euthyroid syndrome
Specimen Type	Serum
Specimen Requirements	Preferred: Red Top Acceptable: Serum Gel (SST)
Stability	Refrigerated (preferred): 28 days Ambient: 28 days Frozen: 28 days
Unacceptable Specimen Conditions	Gross hemolysis
Limitations	Generally, reverse triiodothyronine tests are not necessary since triiodothyronine should not be ordered in hospitalized or sick patients
Methodology	Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Estimated TAT	2-6 days
Testing Schedule	Monday - Friday
Retention	14 days
CPT Code(s)	84482
Additional Information	Test Definition: RT3
Minimum Sample Volume	0.4 mL
Reference Range	10-24 ng/dL
Performing Lab	Mayo
LOINC Code(s)	3052-8