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 spectroscopy
B: Paraffin test
Answer: B: Paraffin test 
Explanation: Tests used in firearm discharge


Based on detection of nitrate : Dermal nitrite (Paraffin) test.
Based on detection of heavy metal: Harrison and Gilroy test, neutron activation analysis, Atomic absorption spectroscopy, and flameless atomic absorption spectroscopy.