The urine ascorbic acid (vitamin C) test detects the presence of ascorbic acid in urine. High levels may interfere with the accuracy of other urine dipstick tests.
Category: Urinalysis
Also known as: ascorbic acid, urine ascorbic acid, vitamin c urine
Reference range: 0–0 (Source: ABIM)
High values may indicate
Positive urine ascorbic acid may indicate excessive vitamin C intake or supplementation. It can cause false-negative results on dipstick tests for glucose, blood, bilirubin, and nitrite.
Low values may indicate
Negative urine ascorbic acid is normal and means no interference with other dipstick test results.