Ascorbic Acid
9 days
Methodology: Liquid chromatography-tandem mass spectrometry (LC/MS-MS)
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Ascorbic acid test. Screens for deficiency (scurvy) or excess.
Plasma, protected from light
1 mL
Green-top (Lithium Heparin) tube, amber plastic transport tube with amber-top.
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.
If amber tubes are unavailable, cover standard transport tube completely, top and bottom, with aluminum foil. Identify specimen with patient name directly on the container and on the outside of the aluminum foil. Secure with tape.
| Temperature | Period |
|---|---|
| Frozen | 14 days |
| Freeze/thaw cycles | stable x1 |