8 hours
Test Updated:
CYSTINE, URINE
CYST
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Test Overview
Nitroprusside
Evaluation of cystinuria
Negative
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
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.