Pregnancy Tests

Current pregnancy tests use immunoassays with monoclonal antibodies to measure the beta subunit of human chori-onic gonadotropin (hCG). Serum assays and sensitive urine assays can now detect pregnancy approximately 1 week after conception. Home pregnancy tests are generally sensitive enough to diagnose pregnancy accurately when done on the first day of the missed period. The most common reason for a false-negative pregnancy test is incorrect timing, such as performing the test too soon.

In the first 4 to 8 weeks of pregnancy, hCG levels double approximately every 2 days. Failure to double in 48 to 72 hours suggests an ectopic pregnancy or abnormal intrauterine pregnancy. For the first 2 weeks after conception, serum levels of hCG are higher than those in urine. However, beginning at approximately 3 weeks and for the remainder of the pregnancy, urine levels are higher than serum levels. Levels of hCG return to normal approximately 2 weeks after delivery. After an abortion, levels return to normal in approximately 3 to 8 weeks. Other conditions that can raise hCG levels include ges-tational trophoblastic neoplasms, such as hydatidiform mole and choriocarcinoma.

Natural Treatments For Psoriasis

Natural Treatments For Psoriasis

Do You Suffer From the Itching and Scaling of Psoriasis? Or the Chronic Agony of Psoriatic Arthritis? If so you are not ALONE! A whopping three percent of the world’s populations suffer from either condition! An incredible 56 million working hours are lost every year by psoriasis sufferers according to the National Psoriasis Foundation.

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