16 days
Gas Chromatography-Mass Spectometry (GC-MS)
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Used to evaluate disorders of cholesterol metabolism, such as sitosterolemia.
Plasma
0.5 mL
Green-top (heparin) tube
Patient must be fasting 12 hours
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 28 days |
| Frozen | 92 days |