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HelpTest Code LAB406 Urine Magnesium, 24 Hour
Performing Lab
Arnot Ogden Medical Center
Ordering Recommendations
Assessing the cause of abnormal serum magnesium concentrations.
Determining whether nutritional magnesium loads are adequate.
Calculating urinary calcium oxalate and calcium phosphate supersaturation and assessing kidney stone risk.
Collect
Urine
Collection Device
24 Hour Collection Jug Free of Preservatives
Specimen Volume
5 mL
Stability (from collection to initiation)
| Room Temp | 3 Days |
| Refrigerated | 3 Days |
Storage/Transport Temperature
Room Temp, Refrigerated
Minimum Requirements
1 mL
Methodology
Direct Method/Colorimetric
Start Date
5/2/2020
Last Review Date
7/12/25
Specimen Handling
Tech to enter 24 hour urine volume.
Invert well before taking aliquot.
Collection Instructions
See Collections Instructions – 24 Hour Urine.
Remarks
TURN AROUND TIME
8 hours