Which of the following analytes will be falsely increased when a sodium citrate blood collection tube is underfilled?
A) BUN
B) PT
C) creatinine
D) phosphorus

Question

Quizplus · Accepted Answer

When a sodium citrate blood collection tube is underfilled, the ratio of anticoagulant to blood is higher than intended. This affects coagulation tests, such as Prothrombin Time (PT), by artificially prolonging them, leading to falsely increased results. The other analytes listed (BUN, creatinine, phosphorus) are not directly affected by the anticoagulant ratio in the same way coagulation tests are.

Which of the Following Analytes Will Be Falsely Increased When