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Test Code MG Magnesium, Plasma or Serum

Performing Laboratory

NRL-Chemistry

Methodology

Colorimetric/End point

Specimen Requirements

Submit only 1 of the following specimens:
  
Preferred:

Specimen Type: Plasma

Container/Tube: Light green top (lithium heparin)

Specimen Volume: 1 mL

Collection Instructions:

1. Spin down.

2. Avoid hemolysis.

3. Label specimen as plasma.

 

Alternate (Non-Hospital Patient):

Specimen Type: Serum

Container/Tube: Gold top, serum gel

Specimen Volume: 1 mL

Collection Instructions:

1. Spin down unopened (vacuum intact) tube within 45 minutes of draw.

2. Avoid hemolysis.

3. Label specimen as serum.

Reference Values

1.8-2.6 mg/dL

Alert values (automatic call-back): 0 mins - 150 yrs:  Critical <1.0 or >4.8 mg/dL

                                                            

                                                          

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:

STAT-45 minutes

Routine-shift

Specimen Transport Temperature

Refrigerate

Test Classification and CPT Coding

83735