Test Code NA Sodium, Plasma or Serum

Additional Codes

LAB122

Used to monitor electrolyte balance.

St. Mary's Regional Medical Center-Chemistry

CPT: 84295

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).

0-7 days: 131-144 mEq/L

7-31 days: 132-142 mEq/L

1-6 months: 132-140 mEq/L

6 months-1 year: 131-140 mEq/L

>1 year: 136-145 mEq/L

Call criteria (automatic call-back): <120 mmol/L or >160 mEq/L

Monday through Sunday

Available STAT