Is hiv dna pcr and antibody/antigen laboratory at 26 days same time conclusive??? blood draw risks, maybe needle reuse????

Probably but need retest at 90 days is needed to be certain.

Recommendations on HIV testing are to repeat antibody testing at 90 days. https://www.cdc.gov/hiv/testing/index.html Very little risk with blood draws , exclusive of bruise at the site of entry. Other risks like infection, nerve damage are very minimal. Needles in labs are not re-used, you should be able to see the seal on the needle before the procedure to confirm sterility