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Test Directory » Testosterone, Total, MS

Test Directory Testosterone, Total, MS

Testosterone, Total, MS

Order Code: TESTTL

Test Summary

Helpful in assessing testicular function in male and managing hirsutism, virilization in females.

Aliases

Testosterone
Total
Pediatric

Specimen Collection

Special Instructions

N/A

Preferred Specimen

1 mL serum

Minimum Volume

0.5 mL

Instructions

Specify age and sex on test request form. Red-top tube (no gel): Allow blood to clot at room temperature. Centrifuge to separate the serum from the cells and immediately pour serum into a plastic transport tube. Serum separator tube: Allow blood to clot at room temperature, centrifuge, and remove serum from the gel immediately (not to exceed 48 hours) by pouring serum into a plastic transport tube.

Patient Preparation

N/A

Storage

Plastic screw-cap vial

Transport Temperature

Refrigerated

Specimen Stability

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

Limitations

N/A

Other Acceptable Specimens

1 mL plasma collected in sodium or lithium heparin (green-top) tube

Unacceptable Specimens

Gross hemolysis • Gross lipemia

Order Code

TESTTL

EPIC (Premier) Code

LAB3706

Includes

N/A

CPT Code

84403

Billing Code

670708

CPT Statement

Methodology

Chromatography/Mass Spectrometry

FDA Status

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153

Department

Reference Testing

Reference Range

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

Setup Schedule / Expected Turnaround Time

Daily; Report available: 4 days