Quantitative Spectrophotometry/Quantitative Enzymatic
New York DOH Approval Status
24-hour urine. Refrigerate during collection.
Thoroughly mix entire collection (24-hour) in one container. Transport four separate 4 mL aliquots of urine using Calculi Risk/Supersaturation Urine Collection Kit (ARUP supply# 46007). Available online through eSupply using ARUP Connect™ or contact Client Services at (800) 522-2787. Do not exceed 4 mL in tubes.
Aliquot according to the following specifications:
1st aliquot (pH 2): Transfer 4 mL urine into a Sulfamic Acid Tube. (Min: 4 mL) Mix well. Freeze immediately.
2nd aliquot (pH 2): Transfer 4 mL urine into a Sulfamic Acid Tube. (Min: 4 mL) Mix well. Freeze immediately.
3rd aliquot (pH 9): Transfer 4 mL urine into a Sodium Carbonate Tube. (Min: 4 mL) Mix well. Freeze immediately.
4th aliquot: Transfer 4 mL urine into an Unpreserved Tube. (Min: 4 mL) Freeze immediately.
If collection kit is unavailable, transport four 4 mL unadjusted aliquots of urine.
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Record total volume and collection time interval on transport tube and test request form.
Ambient: Unacceptable; Refrigerated: Unacceptable Frozen: 2 weeks
|Calcium, Urine - per 24h||
|Creatinine, Urine - per 24h||
|Uric Acid, Urine - per 24h||250-750 mg/d|
|Citric Acid, Urine - per 24h||18 years and older: 320-1240 mg/d|
|Oxalate, Urine - per 24h||
Per 24h calculations are provided to aid interpretation for collections with a duration of 24 hours and an average daily urine volume. For specimens with notable deviations in collection time or volume, ratios of analytes to a corresponding urine creatinine concentration may assist in result interpretation.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
82507; 83945; 84560; 82340
|Component Test Code*||Component Chart Name||LOINC|
|0020205||Calcium, Urine - per volume||17862-4|
|0020206||Calcium, Urine - per 24h||6874-2|
|0020207||Creatinine, Urine - per volume||2161-8|
|0020208||Creatinine, Urine - per 24h||2162-6|
|0020218||Uric Acid, Urine - per volume||3086-6|
|0020219||Uric Acid, Urine - per 24h||3087-4|
|0020242||Citric Acid, Urine - per 24h||6687-8|
|0020243||Citric Acid, Urine - per volume||2128-7|
|0020255||Oxalate, Urine - per 24h||2701-1|
|0020484||Oxalate, Urine - per volume||2700-3|
- Renal Stone Risk Panel