10 days
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Cause for Rejection: Improper labeling, specimen drawn in citrate or ACD tube
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Sensitive total testosterone assay for lower concentration populations.
Serum
0.8 mL
Red-top tube or gel-barrier tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Serum should be transferred from cells within one hour of collection and transferred to a plastic transport tube)
| Temperature | Period |
|---|---|
| Room temperature | 28 days |
| Refrigerated | 28 days |
| Frozen | 2,036 years |