Test Code CA UR RND/24H UR CALCIUM Calcium, Urine
Performing Laboratory
NRL-Chemistry
Methodology
Cresolphthalein Complexone
Specimen Requirements
Submit only 1 of the following specimens:
24-Hour Collection
Specimen Type: Urine, 24-hour
Container/Tube: 24 Hour plastic urine container
Specimen Volume: Entire collection
Collection Instructions: Refrigerate specimen during collection.
Additional Information:
1. Starting and ending times of collection are required.
2. Follow instructions in Urine Collection in Special Instructions.
3. 20-30 mL of 6N HCL should be added to the entire collection. Mix and wait 30 minutes before testing.
Random Collection
Specimen Type: Urine, random
Container/Tube: Plastic urine container
Specimen Volume: 10 mL
Collection Instructions: No preservative.
Reference Values
CALCIUM, CALCULATED, 24-HOUR URINE
25-300 mg/24
CALCIUM, RANDOM URINE
No established reference values
Note: Results are calculated using total volume and length of collection and results are adjusted to units/24 hours.
Day(s) Test Set Up
Monday through Sunday
Specimen Transport Temperature
Refrigerate
Test Classification and CPT Coding
81050-Urine timed measurement (if appropriate)
82310-Random calcium (if appropriate)
82340-24-hour calcium (if appropriate)