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The infections with C. trachomatis and N. gonorrhoeae have recently been determined routinely with the commercial kits for detecting the antigens of these organisms in both the clinical and mass examination laboratories. In mass examination, a change during transporting the specimens must be avoided. Hence, a study on whether the antigens were changed with atmospheric temperature was carried out. As for C. trachomatis, no change in antigen was found on the enzyme immunoassay (EIA) absorbance of the antigen quantity corresponding to the cell of 4.8 x 10(4), 2.4 x 10(4) and 6.0 x 10(3) (IFU/ml) until 5 days at 4, 25 and 37 degrees C respectively after sampling. The coefficient variation was found out to be ca. 10%. In a test on antigen stability of N. gonorrhoeae, similar results to that of C. trachomatis were obtained on the following antigen quantity: 2.4 x 10(3), 3.3 x 10(2) and 9.0 x 10 (CFU/ml) under the same conditions as in the above. The coefficient variation was found out to be 10% or less. To investigate whether there is any difference on the stability of C. trachomatis antigen between mailing and hand carrying, a total of 133 specimens collected from many clinics were subjected to the detection of antigen with the commercial EIA kits. The results of comparison on both transport methods were as follows: agreement rate 96.2%, positive rate 100% and negative rate 95.2%. The highly correlation between the both transportation was confirmed in the detection of antigen; that is, Y = 1.03X + 0.03, r = 0.936.(ABSTRACT TRUNCATED AT 250 WORDS)

Usefulness of the Mailed Specimens for Mass Examination of Chlamydia trachomatis and Neisseria gonorrhoeae with EIA