Which substances can interfere with dipstick readings and how can interference be mitigated?

Which substances can interfere with dipstick readings and how can interference be mitigated?

• A. Ascorbic acid can cause false negatives for glucose, bilirubin, and blood; high-dose vitamin C can affect nitrite readings; mitigate by avoiding high-dose vitamin C or using alternative testing.
• B. Urea interference causes false positives; cooling the sample fixes it.
• C. Creatinine enhances nitrite readings; warming fixes it.
• D. Chloride ions convert nitrite to nitrate; use bimetallic strips.

Answer: (A)