Platelets down to 88; This is a spontaneous report from a contactable consumer (patient). A 51-years-old male patient received bnt162b2 (Pfizer-BioNTech COVID-19 Vaccine, solution for injection), dose 1 intramuscular, administered in Arm Left on 09Aug2021 11:00 (at the age of 51-years-old) (Batch/Lot Number: EW0187) as DOSE 1, SINGLE for covid-19 immunisation. Medical history included gallbladder taken out from Nov2020 to an unknown date, intervertebral disc protrusion (herniated disc, other conditions: from 2009 five herniated disc as of today (on reporting date)) from an unknown date and unknown if ongoing, hepatic steatosis (fatty liver) from an unknown date and unknown if ongoing, high blood pressure from an unknown date and unknown if ongoing and ongoing anxiety, neuropathy and back pain. Patient was hospitalized in Nov2020 for gallbladder predating treatment with the Pfizer COVID 19 vaccine. Also before the vaccine, caller mentions in the past his A1C was high and he ask his doctor if he could just take Metformin and drink black tea. He was in the prediabetic stage and then it went to the normal stage. Mentions he also get examined by every year since 2016. They are the ones who first noticed his platelets were down to 148 and they have been monitoring it since. Concomitant medication included oxycodone hydrochloride (OXYCONTIN) and gabapentin both drugs taken for neuropathy and back pain from an unspecified start date and ongoing; oxycodone taken for an unspecified indication from an unspecified start date and ongoing; diazepam (VALIUM) taken for anxiety from an unspecified start date and ongoing; atenolol taken for blood pressure measurement from an unspecified start date and ongoing. The patients platelets down to 88 (platelet count decreased) on 16Aug2021. It was reported that a week later after vaccination he has an issue with his blood platelets; they have never been this low before except when he was in the hospital last year. The only time it was even close was when his platelets went down to 83 during that hospitalization; he was fine after that. He went back to normal. Adds he was in the hospital in Nov2020. He had a negative COVID test at that time. He had a bile duct that was blocked, and he was all yellow; after a bunch of tests they pulled out his gallbladder. The only thing was his liver enzymes were high so, he had blood work done on 09Jul2021. he had a full blood work and was just going back again in Oct2021. His platelets on 09Jul2021 were at 117; When he saw his doctor for the blood work last Monday, mentions his doctor was pleased with his weight loss and said his blood pressure was 120/80. After he got the first dose of the vaccine on 09Aug2021, he ask them to check his platelets again and they had dropped to 88. He noticed the IPF percentage which has to do with bone marrow and producing new platelets and also a section where they check MRNA. Patient; mentions he lost 27 pounds since 09Jul2021; states he has severe spine problems from herniated disc so he decided to lose weight on purpose. On 09Jul2021 before he got the shot; he gets blood work for liver, A1C (Glycosylated haemoglobin) (was high on unspecified date) and blood platelets. The blood platelets were a concern for him. This past Monday, 16Aug2021, he had new blood work done; found it in his My Chart, adds he understood what he was reading except the IPF (Idiopathic pulmonary fibrosis). His blood platelets were 88; IPF was 12.2%; MPFL (Joint dislocation) 13.0; adds those three work together. Blood platelets were 117 on 09Jul2021. For treatment he was going to see a doctor; a haematologist. Outcome of the event was unknown.