No need to test, If razor one is the new one.
If the instruments are not sterilized properly then go for ELISA test for
HIV and also think of Hepatitis B. Do ELISA test with in a week.
Next Steps
If comes positive then you have to start antiretroviral with immunoglobulin .
Health Tips
Always be careful when you are going to these contaminated area like parlour or for tattoo.