Magnesium, Urine
Test Code: 003400
Performing Lab: LabCorp
CPT Code: 83735 001
Synonym
Mg, Urine
Specimen Type
Urine (24-hour)
Specimen Container
Plastic urine container with 30 mL 6N HCl
Volume
5 mL
Minimum Volume
2.2 mL(NOTE: This volume does NOT allow for repeat testing.)
Specimen Handling
Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). Screw the lid on securely. Transport the specimen promptly to the laboratory. Container MUST be labeled with patient's full name, room number, date and time collection started, and date and time collection finished.
Unacceptable Conditions
No preservative in the collection container; presence of blood in the urine; improperly labeled specimen
Temperature
Room Temperature (KBS tablet is acceptable).
Methodology
Atomic absorption spectrometry (AAS) or colorimetric
Stability
Room Temperature: 14 days
Refrigerated: 14 days
Frozen: 14 days
Refrigerated: 14 days
Frozen: 14 days
| Result Code | Result Name | LOINC |
|---|---|---|
| 013732 | Magnesium, U | 19124-7 |
| 013806 | Magnesium,Urine 24hr | 24447-5 |
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