Minor hair loss is a normal part of the hair-growing cycle. Each hair lives about 4.5 years, falls out and is replaced in about six months. If your hair is falling out in clumps, certain lifestyle practices or changes may be to blame, but consult a physician to rule out underlying medical conditions.
Blood draw: Removal of blood, usually by venipuncture (phlebotomy, venous blood sampling). Common term for blood sampling for laboratory analysis.
Another definition of a Blood Test is, A test performed to provide a defined Blood analysis testing for conditions such as anemia, cholesterol, diabetes, various infections, kidney function, calcium levels, liver function, Blood disease, abnormalities in the body, etc.. Blood test results.