HELLO & WELCOME TO HCM FORUM
Factors Known to Cause False-Positive HIV Antibody Test Results
• Anti-carbohydrate antibodies
• Naturally-occurring antibodies
• Passive immunization: receipt of gamma globulin or immune globulin (as prophylaxis against infection which contains antibodies)
• Leprosy
• Tuberculosis (YOUR PROBLEM)
• Mycobacterium avium
• Systemic
lupus erythematosus
• Renal (kidney) failure
• Hemodialysis/renal failure
• Alpha interferon therapy in hemodialysis patients
• Flu
• Flu vaccination
• Herpes simplex I
• Herpes simplex II
• Upper respiratory tract infection (cold or flu)
• Recent viral infection or exposure to viral vaccines
• Pregnancy in multiparous women
• Malaria
• High levels of circulating immune complexes
•
Hypergammaglobulinemia (high levels of antibodies)
• False positives on other tests, including RPR (rapid plasma reagent) test for syphilis
•
Rheumatoid arthritis
• Hepatitis B vaccination
• Tetanus vaccination
• Organ transplantation
• Renal transplantation
• Anti-lymphocyte antibodies
• Anti-collagen antibodies (found in gay men, haemophiliacs, Africans of both sexes and people with leprosy)
• Serum-positive for rheumatoid factor, antinuclear antibody (both found in rheumatoid arthritis and other autoantibodies)
• Autoimmune diseases : Systemic lupus erythematosus, scleroderma, connective tissue disease, dermatomyositis
• Acute viral infections, DNA viral infections
• Malignant neoplasms (cancers)
• Alcoholic hepatitis/
alcoholic liver disease
•
Primary sclerosing cholangitis
• Hepatitis
• "Sticky" blood (in Africans)
• Antibodies with a high affinity for polystyrene (used in the test kits)
• Blood transfusions, multiple blood transfusions
• Multiple myeloma
• HLA antibodies (to Class I and II leukocyte antigens)
• Anti-smooth muscle antibody
• Anti-parietal cell antibody
• Anti-hepatitis A IgM (antibody)
• Anti-Hbc IgM
• Administration of human immunoglobulin preparations pooled before 1985
• Haemophilia
• Haematologic malignant disorders/lymphoma
•
Primary biliary cirrhosis
• Stevens-Johnson syndrome9,
• Q-fever with associated hepatitis
• Heat-treated specimens
• Lipemic serum (blood with high levels of fat or lipids)
• Haemolyzed serum (blood where haemoglobin is separated from the red cells)
• Hyperbilirubinemia
• Globulins produced during polyclonal gammopathies (which are seen in AIDS risk groups)
• Healthy individuals as a result of poorly-understood cross-reactions
• Normal human ribonucleoproteins
• Other retroviruses (YOUR PROBLEM)
• Anti-mitochondrial antibodies
• Anti-nuclear antibodies
• Anti-microsomal antibodies
• T-cell leukocyte antigen antibodies
• Proteins on the filter paper
• Epstein-Barr virus
•
Visceral leishmaniasis
• Receptive anal sex
HIV RNA PCR IS SPECIFIC FOR HIV AND WILL NOT BE HINDERED BY ANY OTHER HTLV/ TB
THIS TEST IS USED TO DIAGNOSE WHENEVER WESTERN BLOT TEST IS NON SPECIFIC.
TAKE CARE
DR. MAYANK BHARGAVA