Hematology is the scientific study of blood and blood-forming tissues. Also spelled haematology.
Neurology-head, nervous system Oncology-cancer Hematolgy-blood Obsetrics/gynecology (ob/gyn)- female reproductive system Nephrology-kidneys Immunology-immune system Pediatrics-kids diseases Cardiology-heart Opthamology-eyes Dermatology-skin.
One potential reason for rejection could be that the specimen clotted before analysis. Clotted samples can interfere with accurate testing of the complete blood count (CBC) parameters. Another reason could be hemolysis, which is the breakdown of red blood cells, leading to inaccurate results. It's also possible that there was an issue with transportation or handling of the sample that compromised its integrity.