hrp0098p3-272 | Late Breaking | ESPE2024

Pseudo-hyperkalaemia in Congenital Adrenal Hyperplasia – A Challenge for Clinicians

Gunasekara Buddhi , Wadey Hannah , Aitkenhead Helen , Gunasekara Antonia

Background: Hyperkalaemia, defined as potassium levels above 5.5 mmol/L, is a potentially life-threatening condition commonly seen in congenital adrenal hyperplasia (CAH). Pseudohyperkalaemia is a false elevation of potassium observed in vitro, caused by potassium moving out of cells (erythrocytes, leukocytes, or platelets) during or after blood sampling. This is often linked to high platelet counts (>450 × 10^9/L), due to potassium release from activ...