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Test Code CO2 Carbon Dioxide (CO2), Plasma or Serum

Additional Codes

LAB55

Methodology

Used to monitor electrolyte balance.

Performing Laboratory

St. Mary's Regional Medical Center-Chemistry

 

CPT: 82374

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma

Container/Tube: Light green-top (lithium heparin) tube

Specimen: 1 mL of lithium heparin plasma

Transport Temperature: Ambient

Collection Instructions:

Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).

 

Serum

Container/Tube: Plain, red-top tube or serum gel tube

Specimen: 1 mL of serum

Transport Temperature: Ambient

Collection Instructions:

Note: 1. Indicate serum.
2. Label specimen appropriately (serum).

Reference Values

0-1 week: 13-21 mEq/L

1 week-1 month: 13-22 mEq/L

1-6 months: 13-23 mEq/L

6 months-1 year: 14-23 mEq/L

>1 year: 21-32 mEq/L

Call criteria (automatic call-back): <15 mEq/L

Day(s) Test Set Up

Monday through Sunday