Sign in →

Test Code MG Magnesium

Additional Information

Hemolysis will yield elevated results In very rare cases, gammopathy, in particular type IgM (Waldenstrom's macroglobulinemia), may cause unreliable results

Collection Container

Serum gel

Specimen Required

Serum

Other Acceptable Specimen Types

Heparinized plasma

Specimen Volume

1 mL

Minimum Specimen Volume

0.1 mL

Transport Temperature

Refrigerate

Specimen Stability

Room temperature: 7 days, Refrigerated: 7 days, Frozen: 1 year

Methodology

Spectrophotometric; xylidyl blue

Days and Times Performed

Test performed daily

Turnaround Time

24 hours for routine, 1 hour for stats

Reference Ranges

1.6 - 2.3 mg/dL
 

Critical Results

<1.0 or >5.5 mg/dL

If from: Obstetrics OR, Labor & Delivery, or W1 or 2: <1.0 or >8.5 mg/dL

CPT Code

83735

EMR Interface Order Code

07450