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(Science: biochemistry) Abnormally low calciumconcentration, that can result in muscle cramps, abdominal cramps, spasms, and hyperactive deep tendon reflexes.

low blood calcium can be seen in cases of hypoparathyroidism, low vitamin d intake, pregnancy, osteomalacia and certain kidney diseases. Normal blood calcium should be in the range of 8.5 to 10.5 mg/dl.

Compare: hypercalcaemia.

Origin: gr. Haima = blood