Overview

The Anti-TB IgM + IgG (Immunochromatographic Test, ICT) is a serological test used to detect antibodies (IgM and IgG) against Mycobacterium tuberculosis, the bacteria responsible for tuberculosis (TB). It helps in identifying recent or past TB infections, but it is not a definitive diagnostic test.

Risk Assessment

This test is mainly used for:

• Screening for TB infection, especially in high-risk individuals.
• Supplementary testing when clinical suspicion exists but other tests are inconclusive.
• Assessing past exposure to TB.
• Identifying active vs. latent TB (but with limited reliability).

Risk factors for TB include:

• Close contact with an infected person
• Weak immune system (HIV, diabetes, cancer)
• Malnutrition
• Smoking or substance abuse
• Living in crowded/unsanitary conditions
• Healthcare workers exposed to TB patients

Normal Range

• Negative result (IgM and IgG both absent) is considered normal.
• There is no standard numerical value since this is a qualitative test (Positive/Negative).

Interpretation of Results

False positives may occur in conditions like leprosy, atypical mycobacteria, or autoimmune diseases.
False negatives may occur in early TB, immunocompromised patients, or improper sample handling.

Sample Type: Blood Sample (Serum or Plasma)

• Collection Method: Venipuncture (from a vein)
• Test Type: Rapid immunochromatographic assay