Vanderbilt Pathology Laboratory Services
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CALCIUM 24 HR URINE (TCU)
Department: ChemistryTest Synonym(s): TCU
CPT Codes: 82340
Methodology: Indirect Ion Selective Electrode
Reference Range: Not established
Tube Type: 24 hour urine container - plain
Specimen: 24 hour urine- total 24 hour collection
Alternate Specimen: Red tio tube - 5 mL
Volume: 50 mL urine (acidifed - see below)
Minimum Volume: 15 mL urine
Stability: Entire collection must be acidified, mixed and an aliquot sent
Days Performed: Daily
Times Performed: Continuous
Special Instructions: Refrigerate during collection - label with beginning and ending collection times and dates- indicate total volume if an aliquot is sent. Mix specimen.
Click here to print the 24 Hour Urine Collection Guide.
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