Testosterone Test (Male) - TOTAL, MS

Clinical Significance
Testosterone, Total, MS - Helpful in assessing testicular function in male and managing hirsutism, virilization in females.

Alternative Specimen(s)
Plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube

Collection Instructions
Specify age and sex on test request form

Transport Container
Transport tube

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 21 days
Frozen: 2 years

Reject Criteria
Gross hemolysis • Grossly lipemic • Serum separator tube (SST)

Setup Schedule, Preferred Specimen(s), Minimum Volume

Methodology
Chromatography/Mass Spectrometry

Assay Category
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Reference Range(s)
Age    Males (ng/dL)    Females (ng/dL)
Cord Blood*     17-61     16-44
1-10 Days*     ≤187     ≤24
11-30 Days    Not established    Not established
1-2 Months*     72-344     ≤17
3-4 Months*     ≤201     ≤12
5-6 Months*     ≤59     ≤13
7-11 Months*     ≤16     ≤11
1-5 Years     ≤5     ≤8
6-7 Years     ≤25     ≤20
8-10 Years     ≤42     ≤35
11 Years     ≤260     ≤40
12-13 Years     ≤420     ≤40
14-17 Years     ≤1000     ≤40
≥18 Years     250-1100     2-45*Data from J Clin Invest 1974;53:819-828 and J Clin Endocrinol Metab 1973;36:1132-1142