Test ID: K
CPT code: 84132
LOINC: 2823-3
Specimen Type: SERUM/PLASMA
Frequency: Setup: Daily; TAT <24 hrs
Instructions: Min 0.5 mL serum from red or SST. Alt/ heparinized plasma. If stored
overinight, remove serum from cells.
Text: Evaluate electrolyte balance, hypertension, muscular weakness, mental
confusion. Monitor patients on diuretic therapy, dialysis, or in renal
failure.
Methodology: ISE