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CYS24 / 700195 - L
CYSTINE, QUANTITATIVE, 24-HOUR URINE

Test Code CYS24 / 700195 - L 
Test CYSTINE, QUANTITATIVE, 24-HOUR URINE 
Methodology Spectrophotometry 
Description Useful in the detection of cystinuria and other diseases related to the sulfur - containing amino acids, and in the work up of nephrolithiasis. 
Specimen 25 mL (minimum volume: 2.5 mL) aliquot of a 24-hour urine collection. Add 30 mL of 6N HCl at the start of the collection, and refrigerate during collection. For multiple collections, see "Urine Preservatives". Mix well and measure volume. Indicate volume on requisition. pH must be 1 - 3.
Send FROZEN. Follow "Urine Collection" procedure. 
Reference Values 10 - 100 mg/24 hours 
Analytic Time 2 Days 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 82131  

Special Instructions