Test Overview
Test Methodology
Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)
Reference Range *
Age and sex specific reference ranges provided with report.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Limitations
Testosterone levels can vary throughout the day, with early morning testosterone levels generally higher than PM levels.
Testosterone levels can fluctuate day to day, so accurate assessment of androgen status may require more than one determination.
Puberty onset can vary considerably for children, along with a variable progression through Tanner stage of puberty.
Test Details
Days Set Up
Tuesday, Thursday, Friday, Sunday
Analytic Time
8 hours
Soft Order Code
TSTMS
MiChart Code
Testosterone, Female and PEDS, LCMS
Synonyms
- TSTLC
Laboratory
Chemical Pathology
Section
Drug Analysis
Specimen Requirements
Collection Instructions
Collect specimen in a red top (preferred) or SST tube. Centrifuge, aliquot serum into a plastic vial and freeze.
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum
Billing
CPT Code
84403
Fee Code
KA008
LOINC
2986-8