a sore arm for a few days with both doses in the left arm; This is a spontaneous report from a contactable consumer (patient) or other non HCP via agency.  A 93-years-old female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Batch/lot number: EN6208, Expiration date: Unknown), via an unspecified route of administration, administered in left arm on 19Mar2021 14:00 (at the age of 93-years-old) as 1st dose, single for covid-19 immunisation. Medical history included ongoing high blood pressure, cardiac stent, ongoing non-hodgkin's lymphoma. concomitant medications caller takes medicine but does not think they are relevant to this report. She does take medicine for her blood pressure. The patient previously took flu vaccine and experienced sore arm. The patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Batch/lot number: EP7533; Expiration Date: 31Jul2021), via an unspecified route of administration, administered in left arm on 09Apr2021 14:00 (at the age of 93-years-old) as second dose, single for covid-19 immunisation. She reports she did have a sore arm with both of her Covid 19 vaccines. On 19Mar2021, the patient experienced a sore arm after first dose. On 09Apr2021 the patient experienced a sore arm after second dose. Sars-CoV-2 antibody test came back that she has no antibodies after receiving both Covid 19 vaccines and she may not be getting the benefit of the Covid 19 vaccine because of her Non-Hodgkin's Lymphoma. Patient thought everything was fine. On 26 APR 2021, she had appointment with her oncologist, she has non-Hodgkin lymphoma, more or less in remission not getting treatments for 4- 6 months, she goes for complete blood test and visit with him. On that blood test, he added a SARS COV-2, antibody, LQG spike semi, quantitative. Took a few days before she could call him back from results of the particular test, it turns out that no antibodies were found. Her PCP on vacation, spoke to her 10May2021, she told her you have no immunity. and said, if you want you can come in and get the Moderna shot, you can get it here. because her Oncologist, said to not take any more tests, until you see her 14Jun2021 and we will take another blood test. The patient has been staying out of Restaurants, really staying away from people, wearing a mask. She went to her oncologist for a regular visit and her doctor did a complete blood test including the Sars-Cov2 antibody test. She had her second Covid 19 vaccine on 09Apr2021 and her appointment with her oncologist was on 26Apr2021. She was concerned because the Sars-Cov-2 antibody test came back that she has no antibodies. Her blood work was sent. She called her primary care doctor, and that doctor reviewed her blood work and confirmed that she had no Covid 19 antibodies. She hope's she was wrong. She has no immunity even though she had both her Covid 19 vaccines. She called the CDC, and the CDC said the Sars-CoV-2 antibody test wasn't a responsible test and she shouldn't have even taken the antibody test. She called her primary care doctor, and her primary care doctor offered the Moderna Covid 19 vaccine to her or another Covid 19 antibody test. She was not going to mix the Covid 19 vaccines. and her oncologist told her not to get any more blood tests until her next follow up visit on 14Jun2021. She was not sure if she even wants to take another antibody test. She was very unsure of what to do next. Her primary care doctor also said she may not be getting the benefit of the Covid 19 vaccine because of her Non-Hodgkin's Lymphoma. She does have Non-Hodgkin's Lymphoma, it's in remission. She was not getting active treatments. She sees her oncologist every two months and gets blood taken. She asked the health department where and she was told she should only get her Covid 19 vaccines in a hospital setting. She finally found that was giving the Covid 19 vaccines, so she was happy to go and get her vaccine.  When probing The sore arm only lasted about 2-3 days with both doses; it was not terrible. She was just conscious that her arm was sore. The patient underwent lab tests and procedures which included complete blood test: results unspecified on 26Apr2021, sars-cov-2 antibody test: negative on 26Apr2021. The outcome of the event was unknown.  No follow-up attempts are needed. No further information is expected.