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Test Code LAB80 Magnesium, 24 Hour, Urine

Additional Codes

Test Name in EPIC EPIC Test Code Mnemonic
MAGNESIUM, 24HR UR LAB80 U24MG

 

Methodology

Arsenazo

Specimen Requirements

Specimen Type: Urine, 24-hour

Container/Tube: Aliquot tube

Specimen Volume: 5 mL

Specimen Minimum Volume: 2 mL

Collection Instructions: Add 25 mL of 6N HCl as preservative at the start of collection. Mix well.

Additional Information:

1. Starting and ending times of collection and 24-hour volume are required.

2. See Urine Collection in Special Instructions for 24-hour urine collection instructions.

 

Performing Laboratory

Measure total timed urine volume. Enter volume and hours of collection into LIS. Pour aliquot of urine into a smaller testing container and adjust the pH to <2.0  If specimen is cloudy, spin and separate supernatant. Refrigerate specimen until analysis is performed.

Specimen Transport Temperature

Refrigerate 5 days/Frozen OK/Ambient NO

Day(s) Test Set Up

Monday through Sunday

Reference Values

6-10 mEq/24 hours

Test Classification and CPT Coding

83735

Performing Laboratory

Chemistry-

SMDC Clinical Lab

Special Instructions