Feb 8, 2018




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Chemistry

Magnesium, Urine

Magnesium, Urine (HCRMG) Chemistry Lab Test

Name: Magnesium, Urine

Test Name: Magnesium, Urine

Health Link Test Code: HCRMG

LIS Test Code: RMG

CPT Code(s): 83735

Methodology: Arsenazo

Days Performed: Daily, 24 hours.

In-Lab Turnaround Time: 4 hours.

Stat In-Lab Turnaround Time: 2 hours.

Specimen: Random urine

Collection Container: Sterile screw cap container

Collection Instructions:

Collect random urine. No preservative necessary.

Collection Volume: Entire collection

Stability Ambient:

3 days

Stability Refridgerated:

3 days

Stability Frozen:

1 year

Sample Analyzed: Urine aliquot

Testing Volume: 1 mL

Pediatric Testing Volume: 0.2 mL

Specimen Transport:

Transport entire specimen to the laboratory. Transport with coolant pack if coming from clinic location.


Random urines reported in mg/dL.


Reference ranges only available on urines with a collect time of 22-26 hours.

Additional Information:

For timed collection, refer to Magnesium, Urine, 24 hour.