PIP: 110 urine specimens were used to compare and evaluate 3 different pregnancy tests. The Zondek hyperemic reaction, which has been used for years, was done, and, in addition, the Planotest immunologic reaction using reagents in suspension, and a new test, called Planosec by the authors, which used lyophilized, or freeze-dried, reagents. Results were identical for the 3 tests in 98 cases, giving 60 positive and 38 negative tests. The advantages of the Planosec test over the other 2 is that it does not require refrigeration of reagents, does not require experience, it can be done in about 3 minutes, it avoids all risk of bacterial contamination of reagents, and, in case of necessity, can be used at home.