she does not have blood clots at this time, she is just prone to getting them, something on her blood test must have said that; This is a spontaneous report from a contactable consumer (patient). A 74-years-old female patient received bnt162b2 (BNT162B2), dose 1 via an unspecified route of administration, administered in Arm Right on 12Mar2021 13:00 (Batch/Lot Number: EN6204; Expiration Date: 30Jun2021) as SINGLE DOSE for covid-19 immunisation. Medical history included diabetes mellitus, she does not take any medication for Diabetes, because she had lost weight and is in a prediabetic state right now, rheumatoid arthritis, Venous insufficiency, glaucoma, eye drops for glaucoma but does not remember the name, neuropathy, mitral valve prolapse, High cholesterol, miniere's disease, PVC's (Premature ventricular contractions), PAC's (Premature atrial contraction), she has moderate kidney disease not bad yet she thinks it is due to her diabetes. Caller states she thinks diabetes really destroys your body. Concomitant medication(s) included gabapentin (GABAPENTIN) taken for neuropathy peripheral from an unspecified start date and ongoing; gliclazide (DIAZIDE [GLICLAZIDE]) taken for meniere's disease from an unspecified start date and ongoing; metoprolol tartrate (METOPROLOL TARTRATE) taken for mitral valve prolapse, ventricular extrasystoles, cardiac pacemaker insertion, mitral valve prolapse, start and stop date were not reported; pravastatin sodium (PRAVASTATIN [PRAVASTATIN SODIUM]) taken for blood cholesterol increased from an unspecified start date and ongoing; cranberry (CRANBERRY) taken for an unspecified indication, start and stop date were not reported, Cardizem taken at 240 UNK, 1x/day for heart disease, PVC's, PAC's and Mitral Valve prolapse from an unspecified start date and ongoing, eye drops for glaucoma but does not remember the name, vitamin d. No previous immunization with the Pfizer vaccine considered as suspect (or patient age at first and subsequent immunizations if dates of birth or immunizations are not available). No additional Vaccines Administered on Same Date of the Pfizer Suspect. No Prior Vaccinations (within 4 weeks). Family Medical History Relevant to AE(s) was None. It was reported that, the patient had received the first dose of the Pfizer covid vaccine and due for second dose on Thursday. The patient had a bloodwork done and results stated she is more prone to having blood clots. The patient wanted to know with the covid vaccine does she have more chances for getting the blood clot. She already spoke to the safety department but did not have any reference number to provide. No information was found in the Prescribing information and referred the caller to the doctor. Caller wanted to know with Autoimmune disease can she still get the shot or will that going to interfere with getting the vaccine. Caller states she went to a rheumatologist and they took a bunch of bloodwork, and it came back that she is prone to get blood clots and the doctor told her to take baby aspirin. Caller states that she has venous insufficiency in her legs which she thinks can be a blood clot problem. Caller states that she is just getting old and falling apart. Caller also states that she has rheumatoid arthritis now as well. Caller states she has read on internet that it is ok to get the Pfizer COVID-19 vaccine with her rheumatoid arthritis diagnosis, and she is wondering if that is true. New medication (Cimzia) for newly diagnosed RA but has not yet begun taking this medication. The patient has venous insufficiency in her legs which can be a blood clot problem too. Caller states she was reading and hearing a lot that says from the medications in the vaccines may cause people to get blood clots she wants to know if this is true. Caller states that she does not have blood clots at this time, she is just prone to getting them, something on her blood test must have said that. Caller has asked her doctor to fax the blood work results to the caller, but the caller has not received those yet. Caller wants to know if it is ok to get the second dose of the vaccine being that she is prone to get blood clots. AE(s) did not require a visit to Emergency Room/Physician Office. Outcome of the event was unknown.