Male: age 54 been 45 days since covid pos, now neg for 24 days.. no symptoms ...i did a test for anti-sars-cov2 antibody...the result was : 13. 64 coi is 13.64 sufficient amount to fight infections? thanks?

yes, a recent study done at the Cleveland Clinic showed that antibodies from a COVID-19 infection are strong enough to give immunity to the virus and at this time they felt it was unnecessary for those individuals to receive the vaccine. Remember, this is only one study, so you should have this discussion with your PCP and follow his recommendations