Best scientific research 2022
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RESEARCH - 2022 306 tests usually have a cutoff of 25 mIU/ml and are therefore less sensitive than some home pregnancy tests [2]. Urine enters the open area of the line, is absorbed and flows into the reaction zone. There are antibodies against HGT - they stick to the hormone, if there is one in the liquid, and there are also proteins that replace dyes, the result of which will be seen later. In addition, urine and antibodies flow into the test area, the second line, which confirms or rejects pregnancy. Here, antibodies identical to HGT bind to the hormone, squeezing it between two antibodies. Before release, the color-changing protein cleaves the antibody and chemically reacts with the dye. As a result, the appearance (or absence) of a colored band with confirmation of pregnancy. Without HGT, the dye does not react [3]. A pregnancy test is performed by incubating serum with anti-human chorionic gonadotropin (anti-HGT). If HGT is present in the sample, it combines with anti-HGT antibodies and inactivates them. When these inactivated antibodies are exposed to the indicator, which is red or latex cells coated with HGT, the cells do not aggregate, resulting in a positive pregnancy test. If accumulation occurs, the test is considered negative [4]. Components A typical home pregnancy test includes the following components: Immunoassay strip. An immunoassay strip is formed by squeezing nonwoven fibers into a narrow strip and coating them with reactive antibodies. Antibodies combine with the pregnancy hormone in a series of steps, and as a result, the color changes. Absorbent pad The direct application type of test involves an absorbent pad that extends from the test chamber and is used to contact the urine stream. The pad absorbs the liquid and contacts it with the immunoassay strip. Plastic case The test strip and absorbent pad are housed in a two-piece housing that allows the device to be hand-held and protects the strip from environmental contaminants. A leak-proof, clear plastic window on the side of the housing prevents urine from accidentally splashing onto the test strip and allows you to see the test and control zone portions of the strip. |
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