We compared the diagnostic value of an enzyme immunoassay method for detection of gonococcal antigen in genital secretions with culture results and direct Gram stain for Neisseria gonorrhoeae in 1,171 men and 723 women attending a sexually transmitted disease clinic. When compared with culture results in men, the immunoassay provided a sensitivity of 94% and a specificity of 98% and was essenti...

Workplace drug urinalysis protocols include an initial immunoassay followed by a confirmatory gas chromatography/mass spectrometry (GC/MS) test of immunoassaypositive samples. (Drug categories that are commonly tested include: amphetamines, barbiturates, benzodiazepines, cannabis, cocaine, lysergic acid diethylamide, methadone, methaqualone, opiates, phencyclidine, and propoxyphene. Not all dru...

Antigen from purified Mycoplasma pneumoniae organisms treated with Tween-80-ether was used in a solid phase enzyme immunoassay and compared with the conventional lipid containing complement fixation antigen for measuring antibodies in sera from patients with aseptic or bacterial meningitis or with apparent M pneumoniae infection. In immunoblotting of the enzyme immunoassay antigen, enzyme immun...

a dot immunobinding assay ( dia) was used for a quantitative and qualitative assay of rubella antibody. purified antigen and conjugated anti-human immunoglobulin (rahlg) were prepared. nitrocellulose paper dotted with the antigen was added to serially diluted sera or blood samples. the reacting antibodies were visualized by a peroxidase system. development of a colored insoluble substrate was t...

ferritin is a macromolecule and is responsible for the long term iron storage function in human serum and plasma. recent studies have highlighted the role of cell phone exposure on central nervous system, immune function and reproduction. the aim of this study was to investigate whether the human serum ferritin level could be interfered by the exposure to the 900 mhz gsm cell phones. fifty huma...