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Evaluation of cystinuria
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Random or 24 hour collection. Instruct the patient to void at 8:00 am and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24 hour collection period, i.e., 8:00am the next morning. Screw the lid on securely. Transport the specimen promptly to the laboratory. Keep specimen on ice during collection. Any test requiring a 24 hour urine collection with no preservative may also be run on this specimen.
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.