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- W34284046 abstract "Most pregnancy tests currently available in Thailand are latex agglutination inhibition (LI) tests imported at high costs. In this study a pregnancy test kit invented and produced in Thailand was compared with a reference pregnancy test. The reference test indirect hemagglutination inhibition (HI) pregnancy test has a senisitivity of 1 IU of human chorionic gonadotropin (HCG)/ml and the test is a semiquantitative one. The Thai-developed test distributed under the trade name Pregtest is a latex agglutination inhibition test in which HCG is sensitized to polystyrene latex particles. Semiquantitative tests by the LI test were read in 154 urine specimens and the results were compared with that of the HI technique. All urine found negative by the more sensitive HI test were also negative by the LI test. Disagreement of results were limited to urine with HCG levels of 1-2 IU/ml by the HI technique. The semiquantitative test results were as follows: the 2 tests were both negative in 54 specimens. At HCG level of 1 IU/ml by HI technique the LI test was positive at undiluted dilution in 6. Among the remaining 87 specimens which had HCG titer of 2-64 IU/ml by HI the levels titrated by LI test were identical in 64. The present LI pregnancy test was found sensitive enough to be positive in most urine with an HCG level of 2 IU/ml and was rarely negative in urine with HCG at 2 IU/ml. It is thus possible to semiquantitate HCG with a fair degree of accuracy using the LI test. (summary in THA)" @default.
- W34284046 created "2016-06-24" @default.
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- W34284046 date "1983-04-01" @default.
- W34284046 modified "2023-09-23" @default.
- W34284046 title "A comparative study of pregnancy test kit produced in Thailand." @default.
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