ELECTROLYTE PANEL, SERUM

ELECTROLYTE PANEL, SERUM (087-0719)

CPT 4 Code: 80051

Test includes: Carbon Dioxide, Chloride, Potassium, and Sodium

Test Order Mnemonic: LYTES

Lab: Clinical Chemistry

Request Form: Outpatient

Collection: Routine venipuncture

Storage Instructions: Centrifuge the specimen to separate serum from red cells within 2 hours of collection. Store at 2 - 8 C

Causes for Rejection: Gross hemolysis

Availability: Samples are received 24 hours per day at Sample Management, Room 5.136 McCullough.

Turnaround Time: Routine 4 hours; STAT: 1 hour

Specimen: Blood

Volume: 7-mL blood

Minimum Volume: 0.5-mL serum

Container: SST (gel barrier) or red topped tube
Reference Ranges:

Carbon Dioxide	Newborn 15 days - 15 years 15 years - Adult	13-22 mmol/L 20-28 mmol/L 24-31 mmol/L
Chloride	98-108 mmol/L
Potassium	Newborn - 1 year	3.0 - 6.0 mmol/L
Potassium	1 year - Adult	3.5 - 5.0 mmol/L
Sodium	Newborn - 1 year	132 -145 mmol/L
Sodium	1 year - Adult	135 -145mmol/L

Critical Values:

Carbon Dioxide	<10 mmol/L	> 40 mmol/L
Chloride	< 70 mmol/L	> 120 mmol/L
Potassium	<3.0 mmol/L	>6.0 mmol/L
Sodium	<120 mmol/L	>160 mmol/L

Test Methods: Sodium, Potassium, Chloride – ISE Potentiometric; CO2 – Enzymatic End Point

Reviewed April 2007 by P. Harris

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