This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
The following tests help in laboratory diagnosis of Kala-azar except- 
Select and explain. 
A. Bone marrow examination, B. Immobilisation test, C. Blood smear examination, D. Aldehyde test
B: Immobilisation test
Answer: B: Immobilisation test 
Explanation: laboratory diagnosis of kala azar direct evidence peripheral blood smear Culture Bone marrow aspirations Splenic puncture Lymphnode aspirate Antigen detection Polymerase chain reaction Animal inoculation (Refer pgno:41 baveja 3 rd edition)