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Lab Dept:
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Urine/Stool
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Test Name:
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MAGNESIUM, RANDOM URINE
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General Information
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Lab Order Codes:
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UMGR
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Synonyms:
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Mg, Random Urine
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CPT Codes:
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83735 – Magnesium
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Test Includes:
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Urine magnesium concentration in mEq/L
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Logistics
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Test Indications:
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Magnesium is an essential mineral that is found in the body and is related to other cations such as calcium, phosphate, sodium and potassium. The body maintains magnesium levels in blood, cells and bone by regulating how much it absorbs from the intestines and how much it excretes or conserves in the kidneys.
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Lab Testing Sections:
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Chemistry
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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1 day
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Urine, random collection
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Container:
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Plastic leakproof container (No preservatives)
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Draw Volume:
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1 - 3 mL from a random urine collection
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Processed Volume:
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Minimum: 0.5 mL urine
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Collection:
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A random urine sample may be obtained by voiding into a urine cup and is often performed at the laboratory. Bring the refrigerated container to the lab. Make sure all specimens submitted to the laboratory are properly labeled with the patient’s name, medical record number and date of birth.
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Special Processing:
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N/A
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Patient Preparation:
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None
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Sample Rejection:
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Mislabeled or unlabeled specimens
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Interpretive
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Reference Range:
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Not established for random urines
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Critical Values:
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N/A
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Limitations:
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N/A
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Methodology:
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Colorimetric, Methyl Thymol Blue
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References:
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MG Flex® reagent cartridge insert sheet Siemens Healthcare Diagnostics
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Jacobs & DeMott Laboratory Test Handbook Lexi-Comp, Inc (2001) Hudson, OH, 5th Edition
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Biorad Liquichek Urine Chemistry Control Product Insert
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