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8441
Lab Test Details

Lab Test Details

SIM

12090 

CPT

84132 

Synonyms

Specimen Type

Plasma or serum 

Container

3.5 ml Green - Lithium heparin plasma separator 
4.0 ml Gold-top serum separator 

Collection Instructions

None

Volume

2 ml plasma or serum 
Min: 0.5 ml 

Additional Information

None

Patient Preparation

None

Specimen Processing Instructions

Plasma:  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Serum:  Allow to clot.  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Centrifuge within 2 hours of collection.

Transport Requirements

Refrigerated

Specimen Stability

Room temperature:  8 hours   Refrigerated: 5 days 

Rejection Criteria

If not centrifuged within 2 hours of collection.

Reference Range

3.5 -5.2 mmol/L

Critical Value

Newborn = < 2.5 mmol/L; > 6.5 mmol/L; Adult = < 2.8 mmol/L; >6.5 mmol/L 

Test Includes

Potassium 

Methodology

ISE Crown Ether Membrane Electrode 

Testing Frequency

Daily, Monday - Sunday 

 

 

Reviewed By

Crystal Killian

Reviewed Date

3/18/2021

Supplemental