Casandra
Casandra Test Code QD11273Version 1 (DRAFT)
Performing Lab
Dihydrotestosterone, Free, Serum
Clinical Use
Order TestUse
Measurement of free dihydrotestosterone (DHT) in serum, which represents the unbound fraction of DHT that is biologically active. Clinically useful for evaluation of androgen metabolism disorders such as 5α‑reductase deficiency, and for monitoring androgen therapy or prostate-related conditions.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Mass Spectrometry
Biomarkers
Dihydrotestosterone, Free (DHT, Free)
AnalyteDHT, Free • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
4-12 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
Container
red‑top tube (no gel)
Collection Instructions
1.5 mL serum collected in a red‑top tube (no gel); separate serum from cells
Causes for Rejection
Moderate to gross hemolysis • Grossly icteric • Serum separator tube (SST) • Plasma
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 6 months |