Magnesium, 24-Hour Urine (w/o Creatinine)
Order Code: MGU24
Test Summary
Useful in the assessment of nutritional and metabolic disorder. Increased levels indicate renal and respiratory failure and decreased levels indicate seizures, tetany, cardiac arrythmias, low CA++ and K+.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
10 mL urine - See Collection Instructions
Minimum Volume
1 mL
Instructions
Please submit a 10 mL aliquot of a 24-hour collection. Collect urine with 25 mL of 6N HCl to maintain a pH below 3. Refrigerate during and after collection. Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning's first voiding. Record 24-hour urine volume on test request form and urine vial.
Patient Preparation
N/A
Storage
24-hour Urine container 24mL 6N HCL
Transport Temperature
Refrigerated
Specimen Stability
- Room Temperature = 4 days
- Refrigerated = 7 days
- Frozen = 90 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
N/A
Order Code
MGU24
EPIC (Premier) Code
LAB293
Includes
N/A
CPT Code
- 83735
Billing Code
- 670328
- 500002
CPT Statement
Methodology
Spectrophotometry (SP)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675
33608 Ortega Highway
San Juan Capistrano CA, 92675
Department
Reference Testing
Reference Range
N/A
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 2 - 5 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
10 mL urine - See Collection Instructions
Minimum Volume
1 mL
Instructions
Please submit a 10 mL aliquot of a 24-hour collection. Collect urine with 25 mL of 6N HCl to maintain a pH below 3. Refrigerate during and after collection. Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning's first voiding. Record 24-hour urine volume on test request form and urine vial.
Patient Preparation
N/A
Storage
24-hour Urine container 24mL 6N HCL
Transport Temperature
Refrigerated
Specimen Stability
- Room Temperature = 4 days
- Refrigerated = 7 days
- Frozen = 90 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
N/A
Result Information
Methodology
Spectrophotometry (SP)
Testing Laboratory
N/A
Reference Range
N/A
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 2 - 5 days