CALCIUM URINE

Test Code
CAU

CPT Codes
82340

Preferred Specimen
URINE

Instructions
PH SAMPLE BETWEEN 1-2

Transport Container
URINE CUP

Transport Temperature
RT- 2 HRS


Setup Schedule
Set Up:
Report Available:

Reference Range
CALCIUM URINE RANDOMmg/dL


Clinical Significance
Urinary calcium levels are an indication of calcium passed from the body. It generally reflects dietary intake, rate of calcium absorption via the intestines, and re-absorption of calcium into bones. Under normal conditions, the slight increase in absorption occurring from an increase in dietary calcium intake will generally be reflected in an increase in urinary excretion. Urinary calcium is used primarily to assess parathyroid function and the effects of Vitamin D levels. However, parathyroid conditions and associated Vitamin D levels are not the only use for determining urine calcium. Various clinical states that correlate with increased urine calcium levels are as follows: primary hyperparathyroidism, presence of kidney stones, cancers that may have spread to bone, sarcoidosis, Paget's disease, severe hyperthyroidism, dehydration, and kidney disease. Further, increased levels of urine calcium attributed to unknown reasons are termed idiopathic hypercalciuria. Decreased urine calcium is observed with low dietary calcium and / or Vitamin D intake, poor absorption via the intestines, kidney disease, and conditions of the parathyroid glands, such as hypoparathyroidism.

Performing Laboratory
LMH -  Chemistry  x3739 or 3764



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.