Hello and welcome to Healthcare Magic. Thanks for your query.
Unfortunately there is no lab test which can reliably detect rabies
. The only confirmatory test is a brain autopsy. In cases where there a person is exposed to a possible risk, the only way forward is preventive vaccination
I would suggest that you see a doctor for an assessment of your risk of exposure (there are specific protocols an guidelines for this), so that a decision can be made whether you need to be vaccinated or not. Observation of the animal for a period of atleast 2 weeks, for any signs of rabies or death may be one way to ensure that the animal is not infected.
Wish you all the best.
Dr. Jonas Sundarakumar