Test Overview

Test Methodology

Colorimetric (Xylidyl Blue)

Test Usage

To aid in assessing cellular magnesium loss

Reference Range*

50 - 200 mg/24 hrs (5-20 mMol/24 hrs). Random urine collections are reported in units of mg/dL, for which reference values are not established.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details

Days Test Performed

Daily

Analytic Time

8 hours

Soft Order Code

MAGU

MiChart Code

Magnesium, Random Urine

Synonyms

Synonyms

MAGQ
Mg
Mg, Urine
MAGQ
Mg
Mg, Urine
MAGNESIUM URINE 24 HRS
MAGNESIUM URINE RANDOM
MAGU
MAGNESIUM URINE 24 HOUR

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Laboratory

Chemical Pathology

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Specimen Requirements

Offsite Collection Instructions

Collect 24 hour urine in a clean, plastic container with no metal cap or glued insert and no preservative. Aliquot 5 mL urine into a clean, plastic container with no metal cap or glued insert and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine also acceptable.

Rejection Criteria

Specimens collected with Boric Acid preservative are not acceptable.

Normal Volume

5 mL aliquot of 24 hour urine collection or 2 mL aliquot of random urine collection.

Minimum Volume

2 mL aliquot of 24 hour urine collection or 1 mL aliquot of random urine collection.

Billing Information

Fee Codes


CPT Code

83735

LOINC

MAGU 35250-0 MAGQ 32024-2

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