Androstenedione

CPT Code: 82157
Order Code: 17182
ABN Requirement:  No
Specimen: Red Top Serum or EDTA Plasma
Volume:  1.0 mL
Minimum Volume:  0.25 mL
Container: Red-top (no gel), Plasma EDTA (Lavender-Top) or (Royal Blue-Top), Sodium or Lithium Heparin (Green-Top)

Collection:

EDTA Plasma

  1. Draw and gently invert 8 to 10 times.
  2. Centrifuge for 10 minutes.
  3. Pre-squeeze transfer pipet bulb and draw off approximately 2/3 of the upper plasma layer.
    Note: This ensures that the buffy coat and red cells remain undisturbed.
  4. Aliquot plasma into labeled transport tube and cap tightly. Discard original tube.
  5. Store transport tube refrigerated at 2-8°C until ready to ship.

Special Information: Early morning specimen is preferred.

Serum

  1. Collect and label sample according to standard protocols.
  2. Gently invert tube 10 times immediately after draw. Do not shake.
  3. Allow blood to clot 30 minutes.
  4. Centrifuge for 10 minutes.
  5. Aliquot serum into labeled transport tube and cap tightly.

Transport: Store EDTA plasma or serum at 2°C to 8°C after collection and ship the same day per packaging instructions included with the provided shipping box.

Instructions: SST® tubes are unacceptable. Draw blood in a red-top tube (no gel). Separate serum after clotting. Ship serum at room temperature. Do not submit glass tubes. An early morning specimen is preferred.

Stability:

Ambient (15-25°C): 6 hours
Refrigerated (2-8°C): 72 hours
Frozen (-20°C): 90 days

Causes for Rejection: samples collected in serum separator tube (SST), gross hemolysis

Methodology: Chromatography/Mass Spectrometry

Turn Around Time: 5 to 6 days

Reference Range:

Adult Male ng/dL
18-30 Years 50-220
31-50 Years 40-190
51-60 Years 50-220
Adult Female ng/dL
Mid Follicular 51-213
Surge 73-230
Mid Luteal 73-184
Postmenopausal Phase 20-75
Pediatric ng/dL
1-11 Months ≤41
1 Year, Male ≤31
1 Year, Female 35
2 Years, Male ≤27
2 Years, Female ≤34
3 Years, Male ≤27
3 Years, Female ≤38
4 Years, Male ≤29
4 Years, Female ≤42
5 Years, Male ≤31
5 Years, Female ≤45
6 Years, Male ≤36
6 Years, Female ≤45
7 Years, Male ≤43
7 Years, Female ≤48
8 Years, Male ≤54
8 Years, Female ≤57
9 Years, Male ≤65
9 Years, Female ≤77
10 Years, Male 10-77
10 Years, Female 15-111
11 Years, Male 12-90
11 Years, Female 24-149
12 Years, Male 14-106
12 Years, Female 32-182
13 Years, Male 17-124
13 Years, Female 37-205
14 Years, Male 19-139
14 Years, Female 42-221
15 Years, Male 21-154
15 Years, Female 43-238
16 Years, Male 24-172
16 Years, Female 50-252
17 Years, Nale 27-192
17 Years, Female 53-265
Infants ng/dL
Premature (31-35 weeks) ≤420
Term Infants ≤290
<30 days No Range Established
Tanner Stages, Male ng/dL
II-III 17-82
IV-V 57-150
Tanner Stages, Female ng/dL
II-III 43-180
IV-V 73-220

Clinical Significance: The androstenedione test is indicated for the evaluation of patients with androgen excess and for managing patients with Congenital Adrenal Hyperplasia.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.