Test Details
Mnemonic
MGUCR
Ordering Code
3400288
CPT-4 Code(s)
83735, 82570
Specimen Information
Collect
Random urine
Specimen Preparation
Adjust pH to <3.0 with 6N HCl. Mix urine well and send a 10.0 mL aliquot in a screw capped urine cup. Refrigerate urine during and after collection.
Minimum Volume
0.5 mL
Transport Temperature
Refrigerate
Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 90 days
Refrigerated: 7 days
Frozen: 90 days
Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Reference Range
Magnesium, Random Urine
Adult 22-130 mg/g creat
Creatinine, Random Urine
≤6 Months 2-28 mg/dL
7-11 Months 2-31 mg/dL
1-2 Years 2-110 mg/dL
3-8 Years 2-130 mg/dL
9-12 Years 2-160 mg/dL
>12 Years Male 20-320 mg/dL
>12 Years Female 20-275 mg/dL
Adult 22-130 mg/g creat
Creatinine, Random Urine
≤6 Months 2-28 mg/dL
7-11 Months 2-31 mg/dL
1-2 Years 2-110 mg/dL
3-8 Years 2-130 mg/dL
9-12 Years 2-160 mg/dL
>12 Years Male 20-320 mg/dL
>12 Years Female 20-275 mg/dL
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes