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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Magnesium, 24-Hour Urine without Creatinine
Test CodeMAGU
Quest Code
11322
CPT Codes
83735
Includes
CPT code 81050 may be added at an additional charge for volume measurement
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.
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 requisition and urine vial.
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 requisition and urine vial.
Transport Container
Sterile screw-cap container
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 90 days
Refrigerated: 7 days
Frozen: 90 days
Methodology
Spectrophotometry (SP)
Setup Schedule
Tues-sat
Report Available
5 days
Reference Range
Magnesium, 24-Hour Urine
Male | 28-180 mg/24 h |
Female | 18-130 mg/24 h |
Clinical Significance
Useful in the assessment of nutritional and metabolic disorder. Increased levels indicate renal and respiratory failure and decreased levels indicate seizures, tetany, cardiac arrhythmias, Low CA++ and K+.
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |