Hypocalciuria: definition Posted by: Cleo Libonati, RN, BSN in DICTIONARY 0 2,239 Views Abnormally low amount of calcium in the urine, indicating low urinary calcium excretion which is an early renal compensatory mechanism in hypocalcemia. Calcium Deficiency Glossary. Hypocalcemia Hypocalciuria Malabsorption Urinalysis Urine 2013-04-10 Cleo Libonati, RN, BSN