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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Oxalate, 24 Hour Urine (0020482)
Test Code: OXALSO
Synonyms/Keywords

Hyperoxaluria, Oxalate

Test Components

Oxalate

Creatinine, Urine

Useful For
24 hour urine oxalate
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
​No ​24 Hour Urine ​Urine Jug ​Transfer tub ​4.0 mL ​1.5 mL
Collection Processing Instructions

Patient Preparation:  Patient should avoid ingestion of vitamin C prior to collection.

Collect:  24-hour urine. Refrigerate during collection.

Thoroughly mix entire collection (24-hour) in one container. Do not exceed 4 mL in Tubes.

Preserved: Transfer 4 mL (1.5 mL minimum) aliquot to a Transport Tube with Sulfamic Acid.  Mix well. Freeze immediately.

Unpreserved: Transport a 4 mL  (1.5 mL minimum) unadjusted aliquot of urine to an ARUP Standard Transport Tube. Freeze immediately.

Record total volume and collection time interval on transport tube and test request form.

CRITICAL FROZEN:  Separate specimens must be submitted when multiple tests are ordered.

Vitamin C (ascorbic acid) quickly degrades to oxalate in non-acidified urine. Patients should discontinue use of vitamin C supplements at least 48 hours prior to the start of urine collection and abstain until collection is complete

 

Specimen Stability Information
Specimen Type Temperature Time
​Urine ​Frozen ​1 month
Rejection Criteria
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​ARUP Laboratories ​Monday through Friday ​1-4 days ​Quantitative Spectrophotometry
Reference Lab
Reference Range Information
Performing Location Reference Range
​​
Creatinine, Urine - per 24h
Age
Male
Female
3-8 years
140-700 mg/d
140-700 mg/d
9-12 years
300-1300 mg/d
300-1300 mg/d
13-17 years
500-2300 mg/d
400-1600 mg/d
18-50 years
1000-2500 mg/d
700-1600 mg/d
51-80 years
800-2100 mg/d
500-1400 mg/d
81 years and older
600-2000 mg/d
400-1300 mg/d
Oxalate, Urine - per 24h
Effective May 15, 2017
0-12 years: 7-31 mg/d
Male 13 years and older: 16-49 mg/d
Female 13 years and older: 13-40 mg/d
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​83945 ​1
Synonyms/Keywords

Hyperoxaluria, Oxalate

Test Components

Oxalate

Creatinine, Urine

Ordering Applications
Ordering Application Description
​Clinical Order Manager ​Oxalate, 24Hour Urine (0020482)
​Cerner ​Oxalate, 24Hour Urine (0020482)
​Centricity ​Oxalate, 24Hour Urine (0020482)
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
​No ​24 Hour Urine ​Urine Jug ​Transfer tub ​4.0 mL ​1.5 mL
Collection Processing Instructions

Patient Preparation:  Patient should avoid ingestion of vitamin C prior to collection.

Collect:  24-hour urine. Refrigerate during collection.

Thoroughly mix entire collection (24-hour) in one container. Do not exceed 4 mL in Tubes.

Preserved: Transfer 4 mL (1.5 mL minimum) aliquot to a Transport Tube with Sulfamic Acid.  Mix well. Freeze immediately.

Unpreserved: Transport a 4 mL  (1.5 mL minimum) unadjusted aliquot of urine to an ARUP Standard Transport Tube. Freeze immediately.

Record total volume and collection time interval on transport tube and test request form.

CRITICAL FROZEN:  Separate specimens must be submitted when multiple tests are ordered.

Vitamin C (ascorbic acid) quickly degrades to oxalate in non-acidified urine. Patients should discontinue use of vitamin C supplements at least 48 hours prior to the start of urine collection and abstain until collection is complete

 

Specimen Stability Information
Specimen Type Temperature Time
​Urine ​Frozen ​1 month
Rejection Criteria
Useful For
24 hour urine oxalate
Reference Range Information
Performing Location Reference Range
​​
Creatinine, Urine - per 24h
Age
Male
Female
3-8 years
140-700 mg/d
140-700 mg/d
9-12 years
300-1300 mg/d
300-1300 mg/d
13-17 years
500-2300 mg/d
400-1600 mg/d
18-50 years
1000-2500 mg/d
700-1600 mg/d
51-80 years
800-2100 mg/d
500-1400 mg/d
81 years and older
600-2000 mg/d
400-1300 mg/d
Oxalate, Urine - per 24h
Effective May 15, 2017
0-12 years: 7-31 mg/d
Male 13 years and older: 16-49 mg/d
Female 13 years and older: 13-40 mg/d
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​ARUP Laboratories ​Monday through Friday ​1-4 days ​Quantitative Spectrophotometry
Reference Lab
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​83945 ​1
For most current information refer to the Marshfield Laboratory online reference manual.