Calcium, Quantitative, Urine

CERNER / EPIC MNEMONIC: RU/CA (random urine); U/CA (24-hour urine)
POE DESCRIPTION:

Urine Calcium Random; Urine Calcium Timed

CPT CODE: Random = 82340; Timed 82340, 81050
TEST INFORMATION: Results are reported as milligrams of calcium per total volume of urine submitted. Normal range is based on 24-hour collection.
DAYS PERFORMED: Specimen accepted daily, 24 hours
TURNAROUND TIME: 8 hours
SPECIAL INSTRUCTIONS:

For timed urine collection, instruct the patient to void at the beginning of the collection period and discard the specimen.  Then collect all urine including the final specimen voided at the end of the collection period.  Containers must be labeled with patient's full name, room number, date and time collection started, and date and time collection finished.

CONTAINER TYPE:

Random Sterile 80 mL specimen container, Timed 24 hour urine container (Bottle #1) with no preservative or 24 hour urine container (Bottle #4) with 10 mL 6 N HCl

SPECIMEN REQUIREMENTS:

Random or 24-hour urine

MINIMUM VOLUME:

Random urine: 1 mL

Timed Urine: Submit entire urine collection to the laboratory.

HANDLING INSTRUCTIONS: Keep refrigerated during collection.
REFERENCE RANGE:

Random urine: None established

Timed urine: varies with diet; adult: 50-300 mg/24 hours on average diet.

TEST SYNONYM(S):Urine Calcium