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Vitamins

Intrinsic Factor Antibodies

Intrinsic Factor Antibodies tests for autoimmune-related B12 malabsorption. Pernicious anaemia becomes more common with age, making this test particularly relevant for older adults with unexplained or persistent B12 deficiency.

Doctor's Assessment Included

Reference Ranges

Expected result markers.qualitative.negatief

Reference ranges may vary between laboratories. When you order a test, a BIG-registered doctor assesses your personal results in context. For treatment decisions, discuss your results with your GP.

Check your own value

Intrinsic Factor Antibodies: what this test measures

This test detects antibodies directed against intrinsic factor, a protein produced by stomach cells that is essential for vitamin B12 absorption in the small intestine. A positive result may suggest an autoimmune mechanism is interfering with B12 uptake.

Intrinsic Factor Antibodies: why this value matters

Pernicious anaemia is more prevalent in older adults and can contribute to cognitive decline, neurological symptoms, and severe fatigue. Identifying this condition early may help your healthcare provider initiate B12 injection therapy to prevent further complications.

Intrinsic Factor Antibodies: when is testing worthwhile?

Testing may be recommended when you have persistently low B12 levels despite supplementation, if pernicious anaemia is suspected, or if you have other autoimmune conditions. Your healthcare provider can determine whether this test is appropriate for your situation.

Intrinsic Factor Antibodies: symptoms of a high or low value

Low Levels

This test measures antibody presence rather than a continuous range. A negative result suggests intrinsic factor antibodies were not detected, which may help rule out pernicious anaemia as a cause of B12 deficiency.

High Levels

A positive result for intrinsic factor antibodies may be associated with symptoms of pernicious anaemia including severe fatigue, weakness, tingling in extremities, cognitive difficulties, and glossitis. Your healthcare provider should guide further evaluation and treatment.

Intrinsic Factor Antibodies: lifestyle and this value

If intrinsic factor antibodies are detected, your healthcare provider may recommend B12 injections rather than oral supplements, as absorption through the gut may be impaired. Regular monitoring and follow-up with your provider is important for managing this condition.

Intrinsic Factor Antibodies: frequently asked questions

What is pernicious anaemia?

Pernicious anaemia is an autoimmune condition where the body produces antibodies against intrinsic factor, a protein needed to absorb vitamin B12 in the gut. Without adequate intrinsic factor, B12 absorption may be severely impaired regardless of dietary intake.

Can intrinsic factor antibodies come and go?

Once intrinsic factor antibodies are detected, they generally persist. However, test sensitivity is not 100%, so a negative result does not completely rule out pernicious anaemia. Your healthcare provider may recommend additional testing if clinical suspicion remains.

How is pernicious anaemia treated if this test is positive?

Treatment typically involves regular vitamin B12 injections, as oral absorption may be impaired. Your healthcare provider will determine the appropriate frequency and dosage based on your individual needs and response to treatment.

Tests with related values

These panels measure values from the same category as this marker.

Heart & Metabolism

GLP-1 Baseline Panel

Your starting point before the first injection: blood sugar, cholesterol, pancreas, liver, kidneys, thyroid and nutrients in one measurement.

Insulin (Fasting) ALT (Alanine Aminotransferase) TSH (Thyroid Stimulating Hormone) AST (Aspartate Aminotransferase) HDL Cholesterol HbA1c (Glycated Hemoglobin) Bilirubin (Total) ApoB (Apolipoprotein B) Vitamin B12 Ferritin Potassium Sodium Glucose (Fasting) Total Cholesterol Albumin Lipase Creatinine Vitamin D (25-OH) Triglycerides Bilirubin (Direct) Bilirubin (Indirect)
€214,-
Heart & Metabolism

GLP-1 Extended Panel

The 6-month measurement: everything from the check-in plus insulin, ApoB and your nutrients — especially relevant if you have been eating much less for a while.

Insulin (Fasting) ALT (Alanine Aminotransferase) AST (Aspartate Aminotransferase) HDL Cholesterol HbA1c (Glycated Hemoglobin) ApoB (Apolipoprotein B) Vitamin B12 Ferritin Potassium Sodium Glucose (Fasting) Total Cholesterol Albumin Lipase Creatinine Vitamin D (25-OH) Triglycerides
€196,-

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Intrinsic Factor Antibodies

€52,-