Dihydrotestosterone
Order Name
DIHYDTEST
Test Number: 3609075
Revision Date 12/12/2022
Test Number: 3609075
Revision Date 12/12/2022
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Dihydrotestosterone
|
High-pressure liquid chromatography (HPLC) tandem mass spectrometry. | 1848-1 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 1mL (0.5mL) | Serum | Clot Activator (SST or Red No-Gel) | Frozen |
| Alternate 1 | 1mL (0.5mL) | Plasma | Sodium Heparin (Green Top / No-Gel) | Frozen |
| Alternate 2 | 1mL (0.5mL) | Plasma | EDTA (Lavender Top) | Frozen |
| Instructions | Notes: 0.5 mL (Note: This volume Does NOT allow for repeat testing). Specimen Type: Red-top tube, gel-barrier tube, lavender-top (EDTA) tube or green-top (heparin) tube Specimen Storage: FREEZE Specimen Collection: Separate serum or plasma from cells within one hour of collection and Freeze..Send serum or plasma in a plastic transport tube. Transfer specimen to plastic transport tube before freezing. To avoid delays in turnaround time when requesting multiple test on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED. Special Instructions: Testing is performed at Esoterix Endocrinology Laboratory: ES#500144 Specimen Stability: Ambient: 7 days, Refrigerated : 7 days, Frozen: 19 months |
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| GENERAL INFORMATION | |
|---|---|
| Expected TAT | 5 - 10 days |
| Clinical Use | DHT (AKA: 5-a-Dihydrotestosterone) is a potent androgen derived from testosterone via 5-alpha-reductase activity. 5-alpha-reductase deficiency results in incompletely virilized males (phenotypic females). This diagnosis is supported by an elevated ratio of testosterone to DHT. |
| Performing Labcorp Test Code | 500142 |
| Notes | Labcorp Test Code: 500142 |
| CPT Code(s) | 82642 |
| Lab Section | Reference Lab |