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4836U: Calcium 24 hour Urine Print View
Calcium 24 hr Urine S  Male: 55 - 300
Female: 35 - 250 
mg/24hr 
Total Volume     mL 

PRIMARY
1 Urine 24 hour 10 (2) mL   Refrigerated - 35 Day(s)/Frozen - 6 Month(s)/Room Temperature - 5 Day(s) See COLLECTION INSTRUCTIONS./// 
ALTERNATE
  Urinalysis Transport Tube   Room Temperature - 5 Day(s)/Refrigerated - 35 Day(s)/Frozen - 6 Month(s)  
  Urine HCL Additive   Frozen - 6 Month(s)/Room Temperature - 5 Day(s)/Refrigerated - 35 Day(s)  

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.

24 hour urine: Do not include first morning specimen in 24-hour
collection. Collect all subsequent voidings. The last sample
collected should be the first specimen voided the following morning
at the same time as the previous morning's first void. It is
acceptable to add preservative after collection if urine is
refrigerated during collection. Adjust pH to <3. Record the total
volume of urine on the requisition. Transport at room temperature.
Setup Schedule
Monday-Saturday

Reported (Analytical Time)
Same day

CPT Code
82340

The CPT codes provided 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 payer being billed.






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