Laboratory Services
Testosterone, Total by Mass Spectrometry, Serum
Print this pageUpdated Test Information:
Test Description |
Testosterone, Total by Mass Spectrometry, Serum
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Synonym(s) |
TESTG, UOW4068 |
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Test ID |
TESTG
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General Information |
This method uses liquid-liquid extraction and liquid chromatography-tandem mass spectrometry to quantify the concentration of testosterone in serum or plasma. The analytical measurement range is 10-1000 ng/dL and the imprecision is 2-4 %CV. |
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Specimen Type |
Serum |
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Specimen Requirements |
4mL of blood in a RED TOP |
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Alternate Specimen Type |
4mL of blood in a LAVENDER TOP |
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Specimen Collection / Processing Instructions |
Centrifuge and separate serum within 24 hours. |
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Minimum Sample Volume |
requested: 1.0mL Serum/Plasma |
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Stability |
Room Temp: 8 hrs For long term storage, store frozen at -20°C. |
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Unacceptable Specimen Conditions |
GREEN TOP (heparin plasma), GOLD TOP SST, LIME GREEN TOP SST, ORANGE TOP SST, PEARL TOP (and any other tube type that contains a gel) |
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Department (code) |
Chemistry, University (CHU) |
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Methodology |
Liquid Chromatography-Tandem Mass Spectroscopy |
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Testing Schedule |
Three times each week, results expected in 3-4 days. |
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CPT Code(s) |
84403 |
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Performing Lab |
UW Laboratory |
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LOINC Code(s) |