Vitamin A

Test Code: TD_4950
CPT Code(s): 84590

$34

Test Details

Alternative Name(s)

N/A

Test Includes

Vitamin A

Methodology

High performance liquid chromatography (HPLC)

Rejection Criteria

Room temperature samples
Whole blood
Body fluid

Reference Range(s)

By Report

Specimen Requirements

Preferred Specimen

Serum separator tube (SST)

Minimum Volume

0.2 mL serum or plasma

Sample Stability

After separation from cells:
unacceptable room temperature
1 month refrigerated
1 year frozen

Transport Temperature

Critical Frozen (CFZ)

Collection Instructions

1 mL of serum. Allow SST to clot in an upright position for at least 30 minutes, then centrifuge sample within 2 hours of collection. Transfer serum to a plastic transport tube. Clearly label tube as serum. Freeze. Critical Frozen (CFZ).
Patient should be fasting overnight and not have ingested any alcohol for 1 day prior to collection.
When multiple tests are ordered, submit separate tube for this test.

Alternative Specimen

1 mL EDTA (lavender top) or sodium lithium heparin (green top) plasma. Centrifuge sample and separate plasma from cells within 2 hours of collection. Transfer plasma to a plastic transport tube. Clearly label tube as EDTA or heparin plasma. Freeze. Critical Frozen (CFZ).
Patient should be fasting overnight and not have ingested any alcohol for 1 day prior to collection.
When multiple tests are ordered, submit separate tube for this test.