Lyme Disease Test. A Lyme disease test detects antibodies to the Lyme disease bacteria Borrelia burgdorferi in the blood. Lyme disease bacteria are spread by certain kinds of ticks. Lyme disease can be hard to diagnose because its symptoms are similar to those of many other illnesses. If you and your doctor think you have Lyme disease, your doctor will do a careful medical history and physical exam.
Achondroplasia is a genetic (inherited) bone disorder that occurs in one in 25,000 live births. Achondroplasia is the most common type of dwarfism, in which the childâs arms and legs are short in proportion to body length. Further, the head is often large and the trunk is normal size. The average height of adult males with achondroplasia is 52 inches (or 4 feet, 4 inches). The average height of adult females with achondroplasia is 49 inches (or 4 feet, 1 inch).
U.S. LOS ANGELES, July 30â Researchers say they have found the genetic defect responsible for about a third of the cases of dwarfism, or 1 case in every 20,000 people. Scientists at the University of California at Irvine found the gene that causes the defect, achondroplasia, just six weeks after they began looking for it. Three other teams had narrowed the search to the end of human chromosome No. 4.