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.
A blood test involves drawing blood at a health care professionalâs office or a commercial facility and sending the sample to a lab for analysis. A blood test can detect high levels of creatinine, a waste product of normal muscle breakdown, which may indicate kidney disease.