Infection & Immunity

Rapid card test that detects malaria parasite antigens in blood.

Blood test for antibodies against the bacteria that cause typhoid fever.

C-reactive protein — a marker of inflammation in the body.

Tuberculin skin test; the result is read at a follow-up visit.

A blood smear checked under the microscope for malaria parasites.

Rapid card test for IgM and IgG antibodies against scrub typhus.

Rapid card test for IgM and IgG antibodies against the typhoid bacterium.

Screening test for antibodies to HIV-1 and HIV-2.

Screening blood test for syphilis.

Detects the hepatitis B surface antigen in blood.

Detects antibodies to the hepatitis C virus.

Sputum checked under the microscope for acid-fast bacilli (as in tuberculosis).

Rheumatoid factor test.

Anti-streptolysin O — antibodies seen after a streptococcal infection.