RT Book, Section A1 Gomella, Tricia Lacy A1 Eyal, Fabien G. A1 Bany-Mohammed, Fayez SR Print(0) ID 1168356840 T1 Hyperkalemia T2 Gomella's Neonatology: Management, Procedures, On-Call Problems, Diseases, and Drugs, 8e YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781259644818 LK accesspediatrics.mhmedical.com/content.aspx?aid=1168356840 RD 2022/08/10 AB The serum potassium level is 7.0 mEq/L in an extremely low birthweight (ELBW) infant. Normal potassium levels are generally between 3.5 and 5.5 mEq/L, with a potassium >5.5 mEq/L indicating hyperkalemia. The exact definition varies and can be based on maturity or severity. Some reported definitions of hyperkalemia include the following: