Blood test
A blood test was when a sample of blood would be taken from the body to be tested in a lab.

Christine Chapel claimed to have run a number of blood tests on Spock because it was not true Vulcan blood either, and it had Human blood elements in it. ()

Following the discovery of the Founders in the Alpha Quadrant, blood screening was a popular, but ineffective type of blood test administered to individuals, and for a time was increasingly done so on Earth in 2372. ()

External link

Medical scans