Welcome to the forum. Thanks for your question.
The rapid HIV tests are all designed for single use on individual patients; in fact, by the why the test kits are designed, it would be impossible to use the same one twice. Further, perhaps it will help you to know that in the US and Europe in the past 20 years, probably there has not been a single case of HIV infection occurring as a result of drawing blood, or by use of a finger-stick lancet.
So you can absolutely rely on your negative test result and should not be at all worried about being infected during the testing process. There's simply no chance of it.
I hope this has helped. Best wishes-- HHH, MD
And by the way, the NYC PH clinics provide world-class STD/HIV prevention services. The medical directors of both the STD and HIV programs are friends and colleagues of Dr. Hook and me; the NYC health commisioner, Dr. Tom Farley, also is a past colleague and was once a full-time STD specialist and past head of Louisiana's STD/HIV program. There is no way any of these three professionals would permit use of anything other than top-of-the-line equipment and procedures.
Thank you so much I do appreciate your response. You have relieved a lot of my stress.
Thanks for the thanks. I'm glad to have helped.