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Potassium (K)
Test CodeLAB114
Alias/See Also
1231100078
CPT Codes
84132
Includes
POTASSIUM (K)
Preferred Specimen
Gold/SST
Minimum Volume
1.0 mL serum
Instructions
CLINIC COLLECTIONS: Collect 1.0 mL of serum in Gold/SST. Must be spun within 2 hours after collection. If no gel separator, plasma must be pulled off cells within 2 hours.
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature (20 to 25°C): 7 days
Refrigerated (2 to 8°C): 7 days
Freezer (-20°C): 1 year
Refrigerated (2 to 8°C): 7 days
Freezer (-20°C): 1 year
Methodology
Abbott Alinity
Reference Range
Males/Females:
0-7 Days: 3.6-6.0 mEq/L
7-180 Days: 3.7-5.9 mEq/L
180 Days-15 Years: 4.1-5.3 mEq/L
15-18 Years: 3.4-4.7 mEq/L
Adults: 3.5-5.1 mEq/L
0-7 Days: 3.6-6.0 mEq/L
7-180 Days: 3.7-5.9 mEq/L
180 Days-15 Years: 4.1-5.3 mEq/L
15-18 Years: 3.4-4.7 mEq/L
Adults: 3.5-5.1 mEq/L
Performing Laboratory
ARKADELPHIA LABORATORY CONWAY LABORATORY FORT SMITH LABORATORY HEBER SPRINGS LABORATORY LITTLE ROCK LABORATORY NORTH LITTLE ROCK LABORATORY STUTTGART LABORATORY VAN BUREN LABORATORY MALVERN LABORATORY EL DORADO LABORATORY MAGNOLIA LABORATORY DREW COUNTY LABORATORY
Last Updated: August 28, 2026
