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Test ID NBLD0260 Chloride, 24 Hour, Urine

Useful For

Indication of fluid balance and acid-base homeostasis using a 24-hour urine collection

Specimen Type

Urine


Necessary Information


24-Hour volume (in milliliters) is required.



Specimen Required


Supplies: Sarstedt 5 mL Aliquot Tube (T914)

Collection Container/Tube: 24-Hour graduated urine container with no metal cap or glued insert

Submission Container/Tube: Plastic, 5 mL tube or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 4 mL

Collection Instructions:

1. Collect urine for 24 hours.

2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens for multiple collections.


Specimen Minimum Volume

1 mL

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 14 days
  Frozen  30 days
  Ambient  7 days

Day(s) Performed

Monday through Sunday

Report Available

1 to 2 days

Method Name

Potentiometric, Indirect Ion-Selective Electrode (ISE)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82436

Reporting Name

Chloride, 24 HR, U

Reference Values

≥18 years: 34-286 mmol/24 hours

Reference values have not been stablished for patients who are less than 18 years of age.

 

Reference values apply to 24-hour collection.

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

Urine Preservative Collection Options

Note: The addition of preservative or application of temperature controls must occur within 4 hours of completion of the collection.

 

Ambient

OK

Refrigerate

Preferred

Frozen

OK

50% Acetic Acid

OK

Boric Acid

OK

Diazolidinyl Urea

OK

6M Hydrochloric Acid

No

6M Nitric Acid

No

Sodium Carbonate

OK

Thymol

OK

Toluene

No

Secondary ID

614058

Forms

If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.

Sanford Laboratories - Fargo Additional Information:

SANFORD INTERFACE BUILD INFORMATION

Result Code Result Code Description
18379 Chloride, 24 HR, U
18380 Collection Duration
18381 Urine Volume
18382 Chloride Concentration