Diagnosis should generally include either a corrected calcium or ionized calcium level and be confirmed after a week. There is, however, controversy around the usefulness of corrected calcium as it may be no better than total calcium. The normal range is 2.1–2.6 mmol/L (8.8–10.7 mg/dL, 4.3–5.2 mEq/L), with levels greater than 2.6 mmol/L defined as<unk> . Moderate<unk>  is a level of 2.88–3.5 mmol/L (11.5–14 mg/dL) while severe<unk>  is > 3.5 mmol/L (>14 mg/dL). ECG An Osborn wave, an abnormal EKG tracing that can be associated with<unk> . Abnormal heart rhythms can also result, and ECG findings of a short QT interval suggest<unk> . Significant<unk>  can cause ECG changes mimicking an acute myocardial infarction.<unk>  has also been known to cause an ECG finding mimicking hypothermia, known as an Osborn wave.
Hypercalcaemia
Hypermagnesemia
Hypocalcemia
Hyperaemia
Hypouricemia
Hyponatremia
Hypokalemia
Hypernatremia