ⓘ Urinary calcium

                                     

ⓘ Urinary calcium

In a urinalysis, the normal amount of urinary calcium can be measured in amount per time commonly per 24 hours. It can also be measured in amount per mass of creatinine, which avails for estimating the urinary calcium excretion in a spot urine sample, because urinary creatinine clearance is relatively unaffected by differences in free water clearance which occurs, for example, in dehydration and which would distort the interpretation of the urinary calcium in a spot urine sample.

As a rule, the average adult, the amount of calcium in the urine is 100-250 mg in a 24-hour period. For those on low-calcium diets are usually, 50-150 mg / 24 hours while on a calcium diet will have 5-40 Mg / 24 hours.

The following reference ranges are for persons with average calcium intake of 600-800 mg / day for adults: