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HelpTest Code LAB405 Magnesium, Urine Random
Clinical System Name
Urine Magnesium
Synonyms
MG U
Sample Requirements
Specimen: Urine
Container(s): Sterile screw-capped container, Clean container also acceptable.
Preferred Vol: 5 mL
Minimum Vol: 2 mL
Note: Timed collection is preferred (24 hours).
Processing Instructions
Reject due to: Spun sample, insufficient quantity
Spin: N
Aliquot:N
Temp: 2-8 C
Storage location: Store original container and labels in CPA refrigerator, FrigB bucket.
Off-site collection: Mix the primary container thoroughly and aliquot into a 15ml falcon tube using the appropriate aliquot label. The aliquot must be added to the transfer list for testing at main campus. Send sample refrigerated.
For questions on shared samples please call Chemistry East laboratory.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Room temp | 7 d | |
| Refrigerated | 7 d | |
| Frozen | 1 m |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M - F | 1 - 3 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Chemistry
Location: Chem East
Phone Number: (206) 987-2617
CPT Codes
83735
Methodology
Method: Spectrophotometry by Vitros 4600
Analytical Volume: 2 mL
Limitations: Method is affected by fecal contamination
Reference Range
No reference range available for random collections. Magnesium excretion exhibits a diurnal variation and is directly dependent on dietary intake.