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Magnesium, Urine, Random

Mnemonic

U MG R

Synonym

Urine Magnesium - Mg++ - MG

Specimen Collection Requirements

Collect

Urine, one sterile, metal-free container without preservatives

Handling

Legacy Laboratories will adjust the pH to 2 with 6N HCl before testing occurs.

Preferred Volume

5.0 mL urine

Minimum Volume

2.0 mL urine

Transport

Refrigerated (2-8°C)

Rejection Criteria

Samples collected using cotton balls.

Stability

Room Temperature (18-26°C): 2 hours; Refrigerated (2-8°C): 7 days; Frozen (≤-20°C): 1 month

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Colorimetry

Reference Values

Reference Values

Not Established

Comments

Eltrombopag and its metabolites may interfere with this assay causing erroneously high patient results.

CPT Codes

83735

Last Updated: Wednesday, February 3, 2021 12:42:42 AM


Client Services: 503-413-1234