Question

A patient came to the clinic for a low-grade fever of one month duration. As part of the laboratory work-up, the physician ordered erythrocyte sedimentation (ESR). What color tube would be used for this test?

A. Green-top tube
B. Light-blue top tube
C. Lavender-top tube
D. Red-top tube

Answer 1

Option (C), A lavender-top tube is used for an erythrocyte sedimentation rate (ESR) test because it contains EDTA as an anticoagulant to prevent clotting.

Step-by-step explanation:

The correct answer to the question, "What color tube would be used for an erythrocyte sedimentation rate (ESR) test?" is C. Lavender-top tube. This type of tube contains EDTA, which acts as an anticoagulant, preventing the blood from clotting and allowing for an accurate assessment of the erythrocyte sedimentation rate.

The ESR test is a common hematological test used to assess inflammation in the body that might be associated with various conditions, such as infections, cancers, and autoimmune diseases.