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Epic Code LAB114 Potassium, Blood Level

Test Name Alias

Potassium Blood Level | K+ | 8156 | 1230101060

Interface Order Alias

10057

Collection Instructions

Specimen Collection: Blood

Container(s): Gold Top (Serum Separator-SST Gel) or Light Green Top (Lithium Heparin Gel)

Minimum Volume to Collect: 1.0 mL

Neonate Volume to Collect: 1.0 mL

Capillary collect ok? Yes

Microtainer acceptable: Yes

 

Collection Instructions:

  • Avoid hemolysis.
  • Avoid gross lipemia
  • After collection, gently invert tube 8-10 times.
  • Specimen should be processed within 2 hours  See Processing Instructions.

Processing Instructions (Laboratory, Outpatient or Off-site Collection):

Processed Specimen: Plasma or Serum

Centrifuge/Spin: Yes

Aliquot: Yes

Processing Instructions:

  • Serum is preferred specimen type
  • Green Tube/Plasma: Centrifuge after collection.
  • Gold Tube/Serum: Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours
  • Minimum processed specimen volume: 0.5 mL Serum or Plasma

Transport Temperature: Refrigerated

Specimen Transport Temperature

Refrigerate

Specimen Stability

Ambient: 8 hours

Refrigerate: 72 hours

Frozen: aliquot plasma/serum for longer storage

Laboratory Retention: 72 hours

Test Frequency

Available 24 hours, usual TAT 1 day.

Reference Range

  CHW CHS
0 up to 3 Days 4.5-6.5 mmol/L 4.5-6.5 mmol/L
3 Days up to 90 Days 3.8-5.5 mmol/L 3.8-5.5 mmol/L
90 Days and up 3.4-5.0 mmol/L 3.4-5.0 mmol/L

Laboratory Critical Values Table

Performing Department

Chemistry

Performing Department Laboratory Location

CHW:

Corewell Health Reference Laboratory, Grand Rapids, MI
Corewell Health Big Rapids Laboratory, Big Rapids, MI
Corewell Health Blodgett Laboratory, Grand Rapids, MI
Corewell Health Gerber Laboratory, Fremont, MI
Corewell Health Greenville Laboratory, Greenville, MI
Corewell Health Ludington Laboratory, Ludington, MI
Corewell Health Pennock Laboratory, Hastings, MI
Corewell Health Reed City Laboratory, Reed City, MI
Corewell Health Zeeland Laboratory, Zeeland, MI

 

CHS
Corewell Health Lakeland St. Joseph Laboratory, St. Joseph, MI
Corewell Health Lakeland Marie Yeager Cancer Center, St. Joseph, MI
Corewell Health Lakeland Niles Laboratory, Niles, MI
Corewell Health Watervliet Laboratory, Watervliet, MI

Methodology

Ion-Selective Electrode

CPT

84132

CDM Code

3018413201

Epic Test ID

1230101060

LOINC

Potassium Lvl: 2823-3

Reviewed Date

3/7/2024

Updated Date

5/16/2025 - CHS info added

12/2/2025 - Gold Top Preferred specimen

Orderable Regions

Southwest; West