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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.

Specimen Transport Temperature

Refrigerate

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:

STAT-45 minutes

Routine-shift

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

                                                            

                                                          

Test Classification and CPT Coding

83735