Update Type: Replacement Test
Test Updated: 01/07/2026
Test Overview
Test Methodology

Qualitative Enzyme-Linked Immunosorbent Assay

Test Usage

A positive result is indicative of the presence of lactoferrin, a marker for fecal leukocytes. Do not use to diagnose inflammatory bowel disease (IBD) or irritable bowel syndrome (IBS); may be used for monitoring IBD activity.

Reference Range *

Negative

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

A negative result does not exclude the presence of intestinal inflammation.

Test Details
Days Set Up
Daily
Analytic Time

3 - 8 days

Soft Order Code
LCTF
Synonyms
    Laboratory
    Sendout Testing
    Reference Laboratory
    Mayo LCTF
    Section
    Sendout Testing
    Specimen Requirements
    Collection

    Collect random stool in a plastic specimen cup, with a screw cap lid. Send to SPecimen Processing frozen (preferred) or refrigerated. 

    Collection Instructions

    Collect random stool in a pastic, screw capped specimen cup. Send to Specimen Processing frozen (preferred) or refrigerated. 

    Normal Volume

    5 grams

    Minimum Volume

    1 gram

    Storage Temperature
    Refrigerate or Freeze 7 days.
    Additional Information

    Test sent to Mayo Medical Laboratories; performed by ARUP Laboratories.

    Billing
    CPT Code
    83631
    Fee Code
    AB223
    NY State Approved
    No