2. What is the term for errors that occur with a specimen before it is tested? (A) Pretest problems (B) Collection mistakes (C)Venipuncture errors (D)Preanalytical errors

The correct answer is (D) Preanalytical errors.<br /><br />Preanalytical errors encompass all the things that can go wrong with a specimen *before* it gets analyzed in the lab. This includes problems with collection (like incorrect technique or wrong tube), transportation (like delays or temperature issues), and processing (like inadequate mixing or incorrect storage). While (A), (B), and (C) describe potential issues, they are all *types* of preanalytical errors, making (D) the most encompassing and correct term.<br />