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Vitamin A, Serum
MessagePatients must fast a minimum of eight hours. No foods containing vitamin A should be ingested in the previous 48 hours by patients older than six months. For those who are younger than six months, the period is 24 hours.
Test Code
017509
Alias/See Also
Vitamin A, Serum
CPT Codes
84590
Preferred Specimen
Serum, PROTECTED FROM LIGHT
Minimum Volume
0.6 mL (NOTE: This volume does NOT allow for repeat testing.)
Instructions
Specimen should be free from hemolysis. PROTECT FROM LIGHT. Transfer specimen to amber plastic transport tube.
Transport Container
Red-top tube or gel-barrier tube; amber plastic transport tube with amber top. (If amber tubes are unavailable, cover standard transport tube completely, top and bottom, with aluminum foil. Identify specimen with patient's name directly on the container A
Transport Temperature
Refrigerate and PROTECT FROM LIGHT.
Specimen Stability
7 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimen exposed to light; hemolysis
Methodology
High-pressure liquid chromatography (HPLC) with UV detection
Setup Schedule
Daily
