Had blood test today a type and screen antibody test said negative what does this mean?

Depends on what: you are testing for?? HIV? STD? Infectious mononucleosis, other foreign protiens ( antigens) which would ellicit an antibody response ( vural, HIV. hepatitis, herpes, etc) and bacterial antibodies are usually stimuilated by vaccination.

The basics: A simple type & screen is a common test that looks to both establish/confirm a blood type and look for any antibodies to less common blood factors other than the common anti-A or anti-B. When cross matching blood units for a transfusion they do not simply accept the known blood type but any and all of the less common things that may trigger a transfusion reaction.