Interpretation of Results

Result	Interpretation
IgM Positive, IgG Negative	Early-stage TB infection (recent exposure)
IgM Negative, IgG Positive	Past TB infection or latent TB
IgM Positive, IgG Positive	Active TB infection (ongoing)
IgM Negative, IgG Negative	No TB infection or very early stage

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.