Electrolyte Profile

0.5 mL serum, lithium heparin plasma, ocular fluid, or urine. 

Avoid hemolysis.

Serum or plasma: remove from red cells and place sample in an additive free transport tube. 

Urine or fluid: glass or plastic tube.

Label all samples. Ship overnight on cold packs.

Tests for serum and plasma samples are performed at both Canyon and College Station. Tests for urine and fluid are performed at College Station only.