Human tissue samples come in many different types and can be used for a variety of research studies. Some common types of human tissue specimens are skin, blood, saliva, hair, and sweat. Each type of tissue has its own unique properties that can be used for specific research purposes. The type of tissue sample that is chosen will depend on the purpose of the study.
Blood samples can be collected from patients for a variety of reasons, such as to test for diseases or to collect blood cells for medical research. Plasma samples are collected when a patient has had a blood transfusion and contain red and white blood cells, platelets, and other proteins.
A serum is a liquid that contains proteins, antibodies, and other molecules that are released into the blood during an illness or injury. Cerebrospinal fluid (CSF) is produced by the brain and surrounds the brain and spinal cord. Tumor tissue samples can be collected from patients who have cancer or who have tumors that have been surgically removed.
Hair samples can be taken from patients to study hair growth or to see if there is any genetic information present in hair. Saliva samples can be taken to study oral health or to study diseases that are spread through saliva. Sperm samples can be taken from patients to study fertility or to study diseases that are spread through sperm.
Amniotic fluid samples can be taken from pregnant women to study the health of the baby before it is born. Menstrual blood samples can be taken from women to study the health of their menstrual cycle.
When choosing a tissue sample for research, it is important to consider the purpose of the study and the type of tissue that is most appropriate.