Evaluation of cystinuria
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
- CYSTINE, URINE
Collect 24 hour urine specimen with no preservative. Aliquot at least 15 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine is also acceptable.
"Positive" cystine urine samples are stored 6 months frozen for possible quantitative cystine analysis. Call Sendouts at 647-5454 to request quantitative cystine test.