If your child has a rash and the doctor suspects scarlet fever, he or she will usually take a throat culture (a painless swab of throat secretions) to see if the bacteria grow in the laboratory. If a strep infection is confirmed, the doctor will prescribe an antibiotic for your child to be taken for about 10 days.
Pregnancy tests are designed to tell if your urine or blood contains a hormone called human chorionic gonadotropin (hCG). This hormone is produced right after a fertilized egg attaches to the wall of a woman's uterus. This usually happens -- but not always -- about six days after fertilization.
1 Home tests are accurate, some better (more sensitive in showing early pregnancy) than others. 2  Home pregnancy tests may test positive on the first day of a missed period, but almost all detect pregnancy 1 week after a missed period. 3  Call your doctor for an appointment if you test positive for pregnancy with a home test.