Friedman S Test

Friedman's Test

Friedman's Test is an outdated test that allows you to determine whether a woman is pregnant. It is based on the ability of pregnant women's urine (containing human chorionic gonadotropin) to enhance the development of the corpus luteum (corpora lutea) in female rabbits.

The test was proposed in 1929 by American biochemist Morris Friedman and his colleagues. It was widely used to diagnose pregnancy until the 1960s, when it was superseded by more modern enzyme immunoassays for detecting human chorionic gonadotropin in urine.

The main disadvantage of the Friedman test was its length - results could only be obtained after several days. In addition, it required the use of laboratory animals. However, this test has played an important role in the early diagnosis of pregnancy.

In 1925, American biologist Samuel Friedman proposed a method for determining pregnancy in women, based on the reaction of the corpus luteum to the pregnancy hormone, human chorionic gonadotropin. This method is called the “Friedman test”.

To carry out the test, it is necessary to collect the urine of a pregnant woman and apply it to the rabbit's ovary. If the urine contains a sufficient amount of the hormone, the ovary will begin to develop and form the corpus luteum.

This method has several advantages:

– Ease of implementation. The test can be done at home.
- Low cost. The test requires only the urine of a pregnant woman and a rabbit's ovary.
– High sensitivity. The Friedman test allows you to determine the presence of pregnancy in the early stages, when other diagnostic methods are not yet effective.

However, like any other diagnostic method, the Friedman test has its drawbacks:

– Low accuracy. The test may give false positive results, especially if the woman has other diseases that can cause the development of corpora lutea.
– Limited range of application. The Friedman test can only be used to determine pregnancy in humans. It is not suitable for diagnosing other diseases.

Despite these shortcomings, the Friedman test remains a popular method for diagnosing pregnancy in some countries. It is easy to use and can be useful for women who want to know about their condition without having to see a doctor.

The Friedman S Test is an outdated and long-disused test for determining the presence of pregnancy in women, based on the characteristics of human chorionic gonadotropin, which is found in the urine of pregnant women. This test was developed back in the 1950s, but is not currently used.

Determination of pregnancy in females under natural conditions through Friedman's test is based on the correlation between the ability of the vaginal mucus of pregnant females (chorionic gonadon) to activate the development of the vitelline corpus gland in mammals and pregnancy. The method is based on the analysis of the color and relatively high viscosity of vaginal exudate and its ability to activate the growth of the corpus luteum of the ovary.

This test involves using a vaginal suppository for several days, and then an ovarian follicle is pulled out from the removed layer and placed in a test tube with formaldehyde. The Friedman test is then performed using a series of drugs. Comparing the color of pre-prepared