In 1992 April 10, I have presented a paper to an audience of 150 obstetricians at Nagercoil, Kanyakumari District, Tamil Nadu saying "Pregcolor testing as an indicator of threatened abortion(TA)". The tube test used for confirming pregnancy was useful for identifying threatened abortion earlier by the shade of colour it produces after half an hour of testing. During those days no facility was available for estimating B - HCG as of now. If the shade is light coloured.
It denotes less B- HCG level for this pregnancy and so possible TA. If strong colour means no TA will occur. The same finding can be used by semi-urban and rural doctors to assess the possibility of threatened abortion by seeing the colour density in the presently available card test since tube testing is abandoned presently. This will avoid unwanted to be cautious usage of prophylactic hormone injections for avoiding…
