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Testosterone, Free, Direct With Total Testosterone, LC/MS-MS
Evaluate hirsutism and masculinization in women; evaluate testicular function in clinical states in which testosterone-binding proteins may be altered (obesity, cirrhosis, thyroid disorders)
This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.
Free: Direct analog enzyme immunoassay (EIA); Total: liquid chromatography/tandem mass spectrometry (LC/MS-MS)
1.3 mL (Note: This volume does not allow for repeat testing.)
Red-top tube or gel-barrier tube
Serum should be transferred from cells within one hour of collection and transferred to a plastic transport tube.
Causes for Rejection
Plasma specimen; gross lipemia (may yield erroneously high testosterone results); improper labeling
State patient's age and sex on the test request form.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|070195||Testosterone, Free+Total LC/MS||070036||Testosterone, Total, LC/MS||ng/dL||2986-8|
|070195||Testosterone, Free+Total LC/MS||144981||Free Testosterone(Direct)||pg/mL||2991-8|