Which of the following tests is used to distinguish between a warm and cold autoimmune hemolytic anemia?

A Direct antiglobulin test (DAT)
B Indirect antiglobulin test (IAT)
C Thermal amplitude test ✓
D Cold agglutinin test

Explanation

The thermal amplitude test is used to distinguish between warm and cold autoimmune hemolytic anemia by measuring the binding of antibodies to red blood cells at different temperatures.

Source

Clinical Hematology Atlas
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: medium