ASCP Hematology and Blood Bank Exam Questions and Answers 100% Correct

ASCP Hematology and Blood Bank Exam Questions and Answers 100% Correct How many platelets does an average megakaryocyte generate? - Answers 2000 Thrombocytopenia is caused by all of the following except? Aplastic anemia Chemotherapy Decreased Thrombopoietin Post-Spenectomy - Answers Post Splenectomy What is the recommended type of microscopy for manual platelet counts? - Answers Phase Specimen of choice for routine coagulation testing - Answers 3.2% Sodium Citrate ratio of anticoagulant to blood - Answers 1/9 The liver is the site of synthesis of all of the following except: Plasminogen Protein C von Willebrand's Brand Factor - Answers Von Willebrand's factor When thrombin binds with thrombomodulin on the endothelial cell surface, thrombin can - Answers Activate protein C Heparin works as an anticoagulant by: - Answers inhibiting the conversion of thrombin from prothrombin Anemia (Microcytic) - Answers IDA Thalassemia Sideroblastic Chronic Inflammation Anemia (normocytic): - Answers Hereditary hemolytic Acquired hemolytic Hypoproliferative Acute Hemorrhage Anemia: Macrocytic - Answers Megaloblastic Non-megaloblastic Hemoglobinopathies - Answers a group of related genetic blood diseases characterized by abnormal hemoglobin benign leukocytic disorders - Answers Myeloid Lymphoid Myeloid neoplasms - Answers Who is at risk for TA-GVHD and require irradiated cellular blood products? - Answers Immunocompromised patients including neonates less than 4 months of age and patients receiving chemotherapy. What can cause a false positive indirect antiglobulin test (IAT)? - Answers Over-Centrifugation Reverse Typing - Answers Performed using known reagent red blood cells to detect ABO antibodies in the patients serum or plasma. High frequency antigens are... - Answers Common, but it is difficult to identify their corresponding antibodies A newborn presents with neonatal alloimmune thrombocytopenia. What is the most likely cause? - Answers Maternal Antibodies to Neonatal platelet antigens. An Antihetical relationship exist between M antigen and ________ - Answers N Antigen M & N Donor RBC are collected on July 12th of this year and frozen in glycerol on July 17th and stored at -65 C. What is the expiration date? - Answers July 12; 10 years after Collection Date A unit of leukocyte-reduced red blood cells must retain at least what percentage of red blood cells following leukoreduction? - Answers 85% Which of the following clinical findings characterizes post-transfusion purpura (PTP)? Increased Hemoglobin Pancytopenia High Ferritin levels Thrombocytopenia - Answers Thrombocytopenia The serum from a patient of African-American descent is reactive with all screening and panel cells. Which antibody directed to a high incidence antigen is most likely to be present? - Answers Anti-U What antibodies generally react ONLY at the Coombs phase (Antihuman globulin phase) - Answers Kell Duffy Kidd (KDK) What is the first line treatment for moderate to severe Hemophilia A? - Answers Lyophilized Factor VIII concentrate Forward Type Testing - Answers Anti-A: 4 + Anti-B: 4 + Patient is AB E (Big E) rbc antigen is an _____ Frequency antigen - Answers Low The McLeod phenotype is associated with what antigen system? - Answers Kell A rejuvenation substance may be used up to how many days following the expiration of a red cell unit? - Answers 3 Days Fisher-Race and Shorthand ( dCe = r' ) - Answers DCE = Rz Dce = R0 dce = r