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Androstenedione
| Item |
Value |
| Approval req'd? |
No |
| Available Stat? |
No |
| Test code |
ASDN |
| Performed by |
Quest |
| Sendout? |
Yes |
| Method |
LC/MS/MS |
| Patient Preparation |
Early AM sample preferred |
| Collection Instructions |
Early AM sample preferred |
| Container type |
Red top preferred (Gold top unacceptable), EDTA, Light Green and Dark Green acceptable |
| Amount to Collect |
2 mL blood |
| Sample type |
Serum or plasma |
| Preferred volume |
1 mL serum plasma |
| Min. Volume |
0.25 mL serum or plasma |
| UCSF Rejection Criteria |
Sample collected in Gold top |
| Processing notes |
Refrigerate. Order Quest # 17182. |
| Units |
ng/dL |
| Normal range |
Pediatric:
|
1-12 months |
6-78 ng/dL |
|
1-4 years |
5-51 ng/dL |
|
5-9 years |
6-115 ng/dL |
|
10-13 years |
12-221 ng/dL |
|
14-17 years |
22-225 ng/dL |
|
Premature infants (31-35 weeks) |
≤ 480 ng/dL |
|
Term infants |
≤ 290 ng/dL |
Tanner Stages:
|
II-III Males |
17-82 ng/dL |
|
II-III Females |
43-180 ng/dL |
|
IV-V Males |
57-150 ng/dL |
|
IV-V Females |
7-68 ng/dL |
≥ 18 year old male:
|
18-30 years |
50-220 ng/dL |
|
31-50 years |
40-190 ng/dL |
|
51-60 years |
50-220 ng/dL |
≥ 18 year old female:
|
Follicular |
35-250 ng/dL |
|
Mid-cycle |
60-285 ng/dL Luteal |
30-235 ng/dL |
|
Postmenopausal |
20-75 ng/dL |
|
| Stability |
Room temperature 2 weeks, refrigerated 4 weeks, frozen at -20C 2 years |
| Turn around times |
Test performed Tuesday-Saturday. Turnaround time: 2-4 days. |
| Additional information |
To convert ng/dL to nmol/L (SI units) multiply by 0.0349. Newborn reference ranges are taken from Tietz, NW, Clinical Guide to Laboratory Tests, 2nd ed., 1990, Saunders, Philadelphia. |
| CPT coding |
82157-90 |
| LOINC code |
1854-9 |
| Last Updated |
3/16/2011 2:31:43 PM |
| Entry Number |
21 |
If you have additional questions regarding this test, please call: 415-353-1667
