Also known as:
Sample Type: 24HRS URINE
This test is ordered to evaluate the causes for abnormal calcium levels in blood. Measuring urine calcium can help determine whether the kidneys are able to excrete the proper amount of calcium.
This test requires a 24 hour collection. Empty your bladder completely first thing in the morning and collect urine everytime you go to the toilet for the next 24 hours, including the first time the next morning.