ASCP Phlebotomy Technician Certification Practice Exam 2026 – Comprehensive All-in-One Study Guide for Success!

The area of coagulation and hematology typically deals with whole blood or plasma samples. In these fields, it is common to perform tests on the blood in its natural state, or to use plasma obtained from whole blood that is carefully processed but not always requiring centrifugation for all tests. For example, coagulation tests, such as PT (Prothrombin Time) or APTT (Activated Partial Thromboplastin Time), utilize citrated plasma and may be performed directly from collected samples without the need for centrifugation.

In contrast, other areas like serology and microbiology, biochemistry and toxicology, or cytology and histology usually necessitate filtration or separation processes, such as centrifugation, to isolate specific components (like serum, plasma, or cellular components) for accurate analysis and testing. Thus, coagulation and hematology stand out as the area least likely to require centrifugation.