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Test Code CALPR Calprotectin, Feces

Reporting Name

Calprotectin, F

Useful For

Evaluation of patients suspected of having a gastrointestinal inflammatory process

 

Distinguishing inflammatory bowel disease (IBD) from irritable bowel syndrome (IBS), when used in conjunction with other diagnostic modalities, including endoscopy, histology, and imaging

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Fecal


Shipping Instructions


Preferred shipping temperature is frozen. Refrigerated or thawed specimens received more than 72 hours postcollection will be rejected.



Specimen Required


Supplies: Stool container, Small (Random), 4 oz Random (T288)

Submission Container/Tube: Stool container

Specimen Volume: 5 g

Collection Instructions:

1. Collect a fresh random fecal specimen, no preservative.

2. If specimen is sent refrigerate, send immediately after collection.

3. If specimen cannot be sent immediately, freeze and send frozen (preferred).

Additional Information:

1. Separate specimens must be submitted when multiple tests are ordered. Specimen must be split prior to transport.

2. Testing cannot be added on to a previously collected specimen.


Specimen Minimum Volume

1 g

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Frozen (preferred) 7 days
  Refrigerated  72 hours

Reference Values

≤50.0 mcg/g (Normal)

50.1-120.0 mcg/g (Borderline)

≥120.1 mcg/g (Abnormal)

Reference values apply to all ages.

Day(s) and Time(s) Performed

Monday through Friday; 8 a.m.

Test Classification

This test has been cleared, approved or is exempt by the U.S. 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.

CPT Code Information

83993

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CALPR Calprotectin, F 38445-3

 

Result ID Test Result Name Result LOINC Value
CALPR Calprotectin, F 38445-3

Clinical Reference

1. Gisbert JP, McNicholl AG, Golmollon F: Questions and answers on the role of faecal calprotectin as a biological marker in inflammatory bowel disease. Digest Liver Dis. 2009;41:56-66

2. Campeotto F, Butel MJ, Kalach N, et al: High faecal calprotectin concentrations in newborn infants. Arch Dis Child-Fetal. 2004;89:F353-F355

3. Dabritz J, Musci J, Foell D: Diagnostic utility of faecal biomarkers in patients with irritable bowel syndrome. World J Gastroentero. 2014;20(2):363-375

4. Fagerberg, UL, Loof L, Merzoug RD, et al: Fecal calprotectin levels in healthy children studied with an improved assay. J Pediatr Gastr Nutr. 2003;37:438-472

5. Sherwood RA, Walsham NE, Bjarnason I: Gastric, pancreatic, and intestinal function. In: Rifai N, Horwath AR, Wittwer CT, eds. Tietz Textbook of Clinical Chemistry and Molecular Diagnostics. 6th ed. Elsevier; 2018:1398-1420

Method Description

The QUANTA Lite Calprotectin assay is an enzyme-linked immunosorbent assay (ELISA). Briefly, polyclonal capture antibodies specific for human calprotectin are immobilized on a 96-well plate. Calibrators, controls, and diluted patient samples are added to the wells of the plate. If present, calprotectin will bind to the capture antibodies on the plate. After a wash step, a solution containing an enzyme-labelled antibody is added. After another wash step, a substrate solution that will change color in the presence of the enzyme is added. The absorbance of the colored produced is proportional to the amount of calprotectin in the patient sample. Lastly, the control and patient results are calculated based on a curve generated from the kit calibrators.(Packet insert: QUANTA Lite Calprotectin ELISA kit. INOVA Diagnostics; 2016)

Analytic Time

3 days

Reject Due To

Specimens collected from diapers Reject

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-General Request (T239)

-Gastroenterology and Hepatology Client Test Request (T728)

Secondary ID

63016