|Downtime form:||A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery|
|Plasma Separator Tube 4.5 mL|
3.5 - 5.0 mEq/L Pediatric Reference Ranges: Age Range Units <10 days 3.5-6.0 mEq/L >10 days 3.5-5.0 mEq/L Critical value: Adults >16 years <2.8 mEq/L and >6.2 mEq/L Pediatric (0-15 years) <3.0 mEq/L and >6.5 mEq/L
Avoid hemolysis. False elevations may occur in specimens which are not processed promptly (to separate serum from RBC's). Plasma samples drawn in heparin tubes have values slightly lower than serum.
This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
Hemolysis: Significant positive interference at an H index greater than 100 (approximate hemoglobin concentration: 100 mg/dL.
Lipemia (Intralipid): No significant interference up to an L index of 2000. There is poor correlation between turbidity and triglycerides concentration.
Potassium-Other, Body Fluid