Test Directory
T3 (Triiodothyronine), Reverse, Serum
Print this pageUpdated Test Information:
| Test Description |
T3 (Triiodothyronine), Reverse, Serum
|
|
|---|---|---|
| Synonym(s) |
T3 (Triiodothyronine), Reverse
|
|
| Test ID |
RT3
|
|
| General Information |
Useful for:
An aid in the diagnosis of the "sick euthyroid" syndrome |
|
| Specimen Type |
Serum
|
|
| Specimen Requirements |
Red Top
|
|
| Stability |
Refrigerated (preferred) 28 days
Ambient 28 days Frozen 28 days |
|
| Unacceptable Specimen Conditions |
Gross hemolysis Reject
Gross lipemia OK Gross icterus OK |
|
| Methodology |
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
|
|
| Estimated TAT |
2-6 days
|
|
| Testing Schedule |
Monday, Wednesday, Thursday, Friday
|
|
| CPT Code(s) |
84482
|
|
| Minimum Sample Volume |
0.4 mL
|
|
| Reference Range |
10-24 ng/dL
|
|
| Performing Lab |
Mayo
|
|
| LOINC Code(s) |
3052-8
|
