Oxalate, Urine OXALUR

Method(s) Quantitative Spectrophotometry
Specimen Required
Collect

24-hour urine. Refrigerate during collection. Reference intervals for random urine samples are not available.

Transport

CRITICAL FROZEN.

Remarks

SPECIMEN PREPARATION: Thoroughly mix entire collection (24-hour) in one container. Freeze specimens immediately after aliquoting. Do not exceed 4 mL in tubes. Preserved: Transfer 4 mL aliquot to an ARUP Transport Tube with 20 mg Sulfamic Acid (ARUP Supply #48098). Available on line through eSupply using ARUP Connect or contact ARUP Client Services at (800) 522-2787. Mix well (Min: 1.5 mL). Unpreserved: If the collection tube with Sulfamic Acid is not available, transport a 4 mL unadjusted aliquot of urine (Min: 1.5 mL).

Stability

Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month

Schedule Mon-Fri
Billing Code 5010128
CPTCode 83945
Notes

Record total volume and collection time interval on transport tube and test request form. This information is required for test interpretation. Patient should avoid vitamin C supplements for at least 48 hours prior to the start of urine collection and abstain until collection is complete.

Preferred Specimen Collection Device(s)
Reference Interval
 
ComponentReference Interval 
 MaleFemale
Creatinine (24-hour)3-8 years: 140-700 mg/d3-8 years: 140-700 mg/d
 9-12 years: 300-1300 mg/d9-12 years: 300-1300 mg/d
 13-17 years: 500-2300 mg/d13-17 years: 400-1600 mg/d
 18-50 years: 1000-2500 mg/d18-50 years: 700-1600 mg/d
 51-80 years: 800-2100 mg/d51-80 years: 500-1400 mg/d
 81 years and older: 600-2000 mg/d81 years and older: 400-1300 mg/d
Oxalate, Urine0-12 years: 7-31 mg/d0-12 years: 7-31 mg/d
 13 years and older: 16-49 mg/d13 years and older: 13-40 mg/d
No Appointment Necessary
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11 Patient Service Centers in Central New York.

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