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Androstenedione
Test Code17182
CPT Codes
82157
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Patient Preparation
An early morning specimen is preferred.
Minimum Volume
0.25 mL
Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top) tube, EDTA (royal blue-top) tube, sodium heparin (green-top) tube or lithium heparin (green-top) tube
Instructions
Draw blood in a red-top tube (no gel). Separate serum after clotting. Do not submit glass tubes.
Transport Container
Transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 2 years
Refrigerated: 28 days
Frozen: 2 years
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Samples collected in serum separator tubes (SST)
Methodology
Chromatography/Mass Spectrometry
Setup Schedule
Set up: Daily; Report available: 2-5 days
Reference Range
See Laboratory Report
Clinical Significance
Androstenedione may be useful in evaluating patients with androgen excess and managing patients with congenital adrenal hyperplasia (CAH).
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |