Reference Interval:
| Test Number
| Components
| Reference Interval
| | | Vitamin A (Retinol)
| | Age
| Reference Interval
| 0-1 month
2 months-12 years
13-17 years
18 years and older
| 0.18-0.50 mg/L
0.20-0.50 mg/L
0.26-0.70 mg/L
0.30-1.20 mg/L
|
| | | Retinyl Palmitate
| 0-150 years: 0-0.10 mg/L
|
|
| Interpretive Data: |
See Compliance Statement B: www.aruplab.com/CS
|
| Note: |
Serum retinol is typically maintained until hepatic stores are almost depleted. Values greater than 0.30 mg/L represent adequate liver stores, whereas values less than 0.10 mg/L indicate deficiency. Samples that come in contact with plastic tubing or have been exposed to excessive light may show low results.
Vitamin A toxicity occurs when retinol concentration exceeds the capacity of retinol binding protein (RBP). Individuals with compromised renal function can retain RBP and may, therefore, have moderate retinol elevations. Drugs which interfere with vitamin A analysis include probucol (Lorelco).
This assay does not measure other vitamin A metabolites such as retinaldehyde and retinoic acid.
|
| CPT Code(s): |
84590
|
Cross References: |
A Vitamin (Vitamin A (Retinol), Serum or Plasma), Retinol (Vitamin A (Retinol), Serum or Plasma) |
