Test Detail

Cystine, Quantitative, Urine

Test Code:

700195

Performing Lab: LABCORP BURLINGTON

CPT Code:

82131

Order Information
Results

Specimen Container	Plastic urine container without preservative (preferred) or 6N HCl. Note that the addition of 6N HCl may adversely impact other tests for kidney stones or urinalysis.
Specimen Type	Urine (24-hour)
Volume	5 mL aliquot
Minimum Volume	2.5 mL aliquot (Note:This volume does NOT allow for repeat testing).
Temperature	After aliquoting, specimens should immediately be frozen and maintained frozen during shipping as well as at the testing facility until tested.
Specimen Handling	24-hour urine. Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine, including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). The urine container may be kept at room temperature or refrigerated during collection. Measure and record total urine volume. Mix well, aliquot, and freeze the aliquot for storage and shipping. Label container with patient's name, date of birth, date and time collection started, and date and time collection completed.
Methodology	Liquid chromatography/tandem mass spectrometry (LC-MS-MS)
Unacceptable Conditions	Receipt of non-frozen sample.
TAT From Set-Up	4 - 6 Days

Result Code	Result Name	LOINC
700381	Cystine, Quantitative, Urine	32169-5
700382	Cystine, Quant, Ur	2179-0