Variable Potassium Concentrations: Which Is Right and Which Is Wrong?

Course overview

Intended audience: pathologists, clinical laboratory scientists Keywords: reverse pseudohyperkalemia, tumor lysis syndrome, potassium, serum, plasma, whole blood Educational objectives: 1) Recognize analytes that are elevated due to tumor lysis syndrome 2) Differentiate between pseudohyperkalemia, reverse pseudohyperkalemia, and true hyperkalemia 3) Use alternative sample type to measure potassium concentrations accurately in patients suspected of reverse pseudohyperkalemia