This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
All of the following method used for detecting heavy metals, except : 
Select and explain. 
A. Harrison & Gilroy test, B. Paraffin test, C. Neutron activation analysis, D. Atomic adsorption spectrospcopy
B: Paraffin test
Answer: B: Paraffin test 
Explanation: B i.e. Paraffin Test Paraffin or Dermal Nitrate test is now an obsolete test, which was used earlier to determine if a suspect had discharged a fire arm by testing for presence of nitrate not heavy metals.Q