ARUP's Laboratory Test Directory

0020039: Magnesium, Plasma or Serum

Test Mnemonic: MG
Methodology: Spectrophotometry

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: One 4 mL PST or SST.

Transport: 1 mL plasma or serum at 2-8°C.  (Min: 0.3 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.2 mL plasma or serum at 2-8°C.

Remarks: Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP.

Unacceptable Conditions: Specimens collected in EDTA, oxalate/fluoride.  Hemolyzed specimens.

Stability: After separation from cells: Ambient: 1 week; Refrigerated: 1 week; Frozen: 1 year

Reference Interval:
By report (reports may vary based on instrumentation)

CPT Code(s):
83735