Answer: The information can be obtained from an expert phlebotomist or through an internet.
Explanation:
The Phlebotomist is one who is trained especially for taking out blood from the veins of patients. Such blood samples are used for testing purposes. If a phlebotomist is new and has no idea regarding collecting a D-dimer or an HIV test then in that case, he can take the help of another phlebotomist who is an expert in collecting such samples.
Such expert the phlebotomist will guide him properly in it. A new phlebotomist might read a book on such tests or can collect information from the internet also. This will resolve his problem.
