11 days later tested negative on an antibody test/does not have antibodies after second dose; This is a spontaneous report from two contactable consumers (one is the Echocardiogram sonographer patient). A 65-year-old male patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; Lot Number: E13246 or EI3246 -pending clarification; strength reported as "1000") intramuscular from 08Jan2021 07:30 AM at 0.3 mL, single on right deltoid for COVID-19 immunization, reported as "Prevent COVID". Vaccination Facility Type is hospital and was not administered at military facility. Medical history included hypertension, stage 3 renal failure, his creatinine level was elevated and now it was under control since he was not taking NSAIDS and changed his medications around. He cannot take NSAIDS. His creatinine was 1.6 and now it was 1.27. Concomitant medication included unspecified medication for hypertension. The patient previously tool local flu shot a few months ago as it was required by his employer. The patient received MMR V vaccine about 4.5 years ago and he had a terrible reaction for a week, he had muscle aches, pain and joint pain and everything hurt and it eventually went away. The patient previous received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; Lot Number: unknown) on 18Dec2020 07:15am, intramuscular injection in right deltoid  and experienced generalized malaise, muscle aches and pain. No other vaccines administered on the same date of Pfizer suspect. The patient received both doses of the vaccine on 18Dec2020 and on 08Jan2021. 11 days later, patient tested negative on an antibody test. Patient wanted to know how this could occur. The patient works in radiology and had second dose of COVID vaccine on 08Jan2021. He tested for antibodies after the second dose and he was negative for antibodies. He is getting conflicted information on whether he should have antibodies or not. He was asking if that was normal. He provided lot number E13246. On day 4 after the first dose of the vaccine he had generalized malaise, muscle aches and pain, it was painful to put a pair of socks on and it went away within 24 hours. Patient got nothing, no reaction, with the second dose of the vaccine, he did not even get a headache. He received his test results yesterday (20Jan2021) that he did not have antibodies. Patient was asking if this was normal. He has received conflicting information on whether he should or should not have antibodies after receiving the COVID Vaccine, MRNA. Also asked if it is it him or is he not supposed to have antibodies since he has not been infected with the virus. Patient sees COVID patients everyday at the hospital. He does echocardiography and he was close to the patients for 20 minutes and there was a risk of being exposed for COVID. Patient clarified that he is a registered diagnostic licensed medical sonographer, not a HCP. Event did not required emergency room and physician offices visit. Patient stated "this year that have had 472 cases of the flu and last year there was 13,000. The flu has been non existent his year and he does not know if that is due to everyone wearing masks". Outcome of the event was unknown.  Information on Lot/Batch has been requested.