What is the reference range for Intestinal Fatty Acid-Binding Protein?

The standard reference range for Intestinal Fatty Acid-Binding Protein is <300 pg/mL (context-dependent). Reference ranges vary by laboratory and assay platform — interpret in context of the issuing laboratory's stated range.

Which tests measure Intestinal Fatty Acid-Binding Protein?

Intestinal Fatty Acid-Binding Protein is measured in 1 test on BiomarkersLabs.com, including Advanced Intestinal Barrier Assessment.

Biomarker Reference · I-FABP

What does the Intestinal Fatty Acid-Binding Protein test measure?

Q: What is Intestinal Fatty Acid-Binding Protein?

I-FABP is a small cytoplasmic protein highly specific to mature enterocytes of the small intestine, involved in intracellular fatty-acid transport. It is released into the circulation when enterocytes are damaged or undergo necrosis, making it a marker of acute intestinal epithelial injury. Its plasma half-life is short (approximately 11 minutes), so it reflects recent or ongoing injury.

Q: Why is Intestinal Fatty Acid-Binding Protein measured?

I-FABP is used as a biomarker of acute intestinal ischaemia, necrotising enterocolitis, and enterocyte damage from inflammatory, infectious, or mechanical causes. In the context of barrier assessment it reflects recent epithelial injury, though it is more commonly employed in acute care (trauma, sepsis, mesenteric ischaemia) than in chronic functional testing.

Q: Which tests measure Intestinal Fatty Acid-Binding Protein?

Intestinal Fatty Acid-Binding Protein is measured in 1 test on BiomarkersLabs.com, including Advanced Intestinal Barrier Assessment.

Intestinal Fatty Acid-Binding Protein (I-FABP) is a clinical biomarker used in microbiome-gut assessment. I-FABP is a small cytoplasmic protein highly specific to mature enterocytes of the small intestine, involved in intracellular fatty-acid transport. It is measured in 1 laboratory test on BiomarkersLabs.com.

Reference Range: <300 pg/mL (context-dependent)
Units: pg/mL
Measured In: 1 test
Category: —

Functional medicine optimal<200 pg/mL

What is Intestinal Fatty Acid-Binding Protein?

I-FABP is a small cytoplasmic protein highly specific to mature enterocytes of the small intestine, involved in intracellular fatty-acid transport. It is released into the circulation when enterocytes are damaged or undergo necrosis, making it a marker of acute intestinal epithelial injury. Its plasma half-life is short (approximately 11 minutes), so it reflects recent or ongoing injury.

Why is Intestinal Fatty Acid-Binding Protein measured?

I-FABP is used as a biomarker of acute intestinal ischaemia, necrotising enterocolitis, and enterocyte damage from inflammatory, infectious, or mechanical causes. In the context of barrier assessment it reflects recent epithelial injury, though it is more commonly employed in acute care (trauma, sepsis, mesenteric ischaemia) than in chronic functional testing.

Reference ranges

Standard reference: <300 pg/mL (context-dependent)
Functional medicine optimal: <200 pg/mL
Units: pg/mL

Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.

Tests that measure Intestinal Fatty Acid-Binding Protein

1 test on BiomarkersLabs.com include this biomarker.

BML-MBG-007Comprehensive

Advanced Intestinal Barrier Assessment

Intestinal Fatty Acid-Binding Protein reference range in this test: <300 pg/mL (context-dependent)

Related clinical conditions

Related Biomarkers

Frequently measured alongside

Zonulin3 tests Lipopolysaccharide-Binding ProteinLBP1 test Diamine OxidaseDAO1 test

Order tests measuring Intestinal Fatty Acid-Binding Protein for your patients

Available exclusively to verified licensed healthcare practitioners. CLIA-certified laboratory results delivered to your secure portal.