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Potassium - Blood

Source Blood 
Mnemonic
Specimen Requirements

1 x 5 mL light green (mint) top PST tube.  Gold top SST tube is also acceptable.

0.2 mL heparinized plasma or serum

Minimum Blood Volumes for Patients less than 45 kg (100 lb) Including Neonates and Pediatrics

 
Specimen Handling MUST be centrifuged within 2 hours of collection to ensure accurate results. 
Additional Information Potassium can also be performed on fluids (test mnemonic FLK) 
Testing Location Chemistry-All Sites 
Testing Frequency Daily 
Alternate Name(s)
Reference Interval

1 day – 3 months

4.0-6.2 mmol/L

4 – 11 months

3.7-5.6 mmol/L

1 – 150 years

3.3-5.1 mmol/L

Click here for critical values.

 


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