Item Value
Test name Potassium, Plasma / Serum
Available Stat? Yes
Turn around times STAT 1 hour, Routine 4 hours
In House Availability Test available 24 hours per day 7 days per week
Performed by Parnassus, Mission Bay & Mt. Zion Chemistry
Normal range
< 1 year 3.2-6.0 mmol/L
> 1 year 3.5-5.1 mmol/L


1. Normal range for infants 0 to <1 year adopted from Soldin, Steven J., "Pediatric Reference Intervals", 6th edition, AACC Press, 2007, method 4.
2. Adult range used for children >1 year old.
3. Normal range for adults was determined by testing 271 male and female healthy blood donors at UCSF with the lower limits of normal adjusted to encompass results from plasma specimens.
Container type Light green top preferred, Gold top acceptable
Amount to Collect 1 mL blood
Click here for Microdetermination info
Sample type Plasma or serum

If you have additional questions regarding this test, please call: 415-353-1667