Magnesium, Urine
0020477
 
Ordering Recommendation
Mnemonic
UMG
Methodology
Quantitative Spectrophotometry
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
24-hour urine. Refrigerate during collection. Also acceptable: Random urine.  
Specimen Preparation
Adjust pH to 1 by adding 6M HCl (approximately 10 mL HCl/24-hour specimen based on normal adult output of 1000-2000 mL/24 hours. Pediatric specimens will require less than 10 mL to reach the correct pH). Record total volume and collection time interval on transport tube and test request form.
Transfer 4 mL aliquot of urine from a well-mixed 24-hour collection to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Specimens containing preservatives other than HCl. Specimen submitted in metal containers.  
Remarks
 
Stability
Ambient: 1 week (if acidified); Refrigerated: 1 week; Frozen: 1 year  
Reference Interval
Effective August 15, 2011

12-199 mg/d
Interpretive Data
Note
CPT Code(s)
83735
Components
Component Test Code*Component Chart Name
0020207Creatinine, Urine - per volume
0020208Creatinine, Urine - per 24h
0020211Magnesium, Urine - per volume
0020212Magnesium, Urine per 24h
0097110Total Volume
0097111Hours Collected
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • Magnesium/Creatinine, Random, Urine
  • Mg