MAGNESIUM, URINE 24HR

Index:

Order Name MAG URINE
Test Number: 2927020
Revision Date 05/23/2023

Test Name	Methodology	LOINC Code
Magnesium Urine	Atomic Absorption Spectrophotometry	19124-7
Magnesium, Urine 24hr	Calculation	19124-7
Total Volume - Prompt [3809175]		19153-6

SPECIMEN REQUIREMENTS
Specimen	Specimen Volume (min)	Specimen Type	Specimen Container	Transport Environment
Preferred	4 mL (0.5 mL)	Urine, 24-hour	24 hour Urine Container	Refrigerated
Instructions	Notes: 2.2 mL (Note: This volume Does NOT allow for repeat testing.) Specimen Type: Plastic urine container with 30 mL 6N HCl Specimen Storage: Room Temperature (KBS tablet is acceptable). Specimen Collection: 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. Special Instructions: Request form MUST state 24-hour specimen volume. After collection, pH is adjusted to 1.5 - 2.0 with 6N HCl. Specimen Stability: Ambient: 14 days, Refrigerated : 14 days, Frozen: 14 days