Test Code REVT3 T3 (Triiodothyronine), Reverse, Serum
Additional Codes
Mayo Code |
---|
RT3 |
Epic Code |
LAB3266 |
Sunquest Code |
REVT3 |
Reporting Name
T3 (Triiodothyronine), Reverse, SUseful For
Aiding in the diagnosis of the sick euthyroid syndrome
Method Name
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Portions of this test are covered by patents held by Quest Diagnostics.
Performing Laboratory

Specimen Type
SerumSpecimen Required
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 0.8 mL
Specimen Minimum Volume
0.4 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 28 days | |
Ambient | 28 days | ||
Frozen | 28 days |
Reject Due To
Gross hemolysis | Reject |
Gross lipemia | OK |
Gross icterus | OK |
Reference Values
10-24 ng/dL
Day(s) and Time(s) Performed
Monday through Friday; 10 a.m.
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
84482
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
RT3 | T3 (Triiodothyronine), Reverse, S | 3052-8 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
9405 | T3(Triiodothyronine),Reverse,S | 3052-8 |
Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.