Blood Banking Questions

Blood Banking Questions 1. The interval between blood donation is a. 6 weeks b. 8 weeks c. 10 weeks d. 3 months 2. The oral temperature of a donor must not exceed a. 37C b. 37.5C c. 98.6F d. 98F 3. The minimum acceptable hemoglobin for male donors is a. 12.5 g/dl b. 13.0 g/dl c. 13.5 g/dl d. 4.0 g/dl 4. What is the lowest acceptable hematocrit for female donors a. 36% b. 38% c. 41% d. 43% 5. Prospective donors who have malaria should be a. Permanently rejected b. Deferred for three years after cessation of treatment c. Deferred for two years after cessation of treatment d. Deferred for six months 6. Symnptom-free donors who have been immunized with oral polio, measles (rubeola) or mumps vaccines are acceptable after a period of a. 24 hours b. 2 days c. 2 weeks d. 24 days 7. An autologous blood donor must a. Be over 21 years old b. Be treated for bacterecimia c. Have at least an 11g/dl hemoglobin d. Be on oral iron therapy 8. Which biochemical change does not occur in stored blood? a. Plasma pH decreases b. Plasma K decreases c. Plasma NH3 increases d. Inorganic phosphate increases 9. What is the acceptable temperature range for blood bank refrigerator? a. 1-6 C b. 1-10C c. 6-10C d. 32-37C 10. If blood is to be transoported, the blood temperature must be kept between a. 2-8C b. 1-10C c. 1-6C d. 4-6C 11. Which blood group system was discovered first? a. ABO b. MNS c. P d. Rh 12. An amorph is a gene a. Which is expressed in the heterozygous state b. Which is expressed only in the homozygous state c. With no observable effect d. With a variable effect 13. Production of more antigen in the homozygous state than in the heterozygous state is referred to as a. Dosage effect b. Antigenic determinant c. Independent segregation d. Prozone 14. Antibodies a. All react at 37C b. All react at 4C c. Never react at 20C d. That react at 37C are considered the most dangerous clinically 15. Naturally occurring antibodies are found regularly in which system a. ABO b. Rh c. Kell d. Kidd 16. Select the incorrect statement below. Naturally occurring antibodies a. React best in saline b. React best at room temperature or 4C c. Do not usually cross the placenta d. Are usually IgG 17. Immune antibodies may be produced by a. Intermuscular injection of blood b. pregnancy c. repeated blood transfusions d. all of the above 18. the dosage effect means a. greater reactivity when more serum is used b. greater reactivity when a greater number of cells are used c. stronger reactions with homozygous cells than heterozygous cells d. reaction with heterozygous cells only 19. Anti-A is a seed extract from a. Ulex europaeus b. Vicla graminea c. Arachis hypogea d. Dolichos biflorus 20. The frequency of a group A individuals in the united states is a. 4% b. 9% c. 41% d. 46% 21. Group B individuals a. Have A antigens on their red cells b. Have anti-A in their sera c. Have neither anti-A nor anti-B in their sera d. Have –B in their sera 22. Which of the following blood groups will not be agglutinated by anti-A,B typing serum a. A b. B c. AB d. O 23. Which of the following blood groups react most strongly with anti-H a. AB b. A1 c. O d. B 24. What reagent is made from the seeds of the plant dolichos biflorus a. Anti-A1 b. Anti- A,B c. Anti-B d. Anti-H 25. Who proposed a numerical Rh nomenclature? a. Fisher and race 26. 27. 28. 29. 30. 31. 32. 33. b. Landsteiner c. Rosenfield d. Wiener Which of the following is true of Du? a. Du cannot be inherioted b. Du is a weak variant of the Rho (D) antigen) c. Du cells should be considered Rho(D) negative when used as donor blood d. Du is common in Caucasians A Du of the gene interaction variety would have the following genotyope a. DuCe/dce b. Duce/dce c. DuCe/dCe d. Dce/dce Anti-C will not react with a. R1R2 cells b. R1R1 cells c. Rr cells d. r1r cells antgi –E will react with a. rr cells b. R1r1 cells c. Ror cells d. R2R2 cells Anti-c can eb formed by persons wioth the genotype a. R1R2 b. R1R1 c. R2r d. Rr Anti-hr1 will not react with= a. Rr cells b. R1r cells c. R1R1 cells d. R2R2 cells Anti-hr” will react with a. R2ry cells b. R1R1 cells c. R2R2 cells d. RzRz cells The f antigen refers to a. Ce b. cE c. CE d. ce 34. the symbol for the Bombay blood group is a. OPh b. OH c. Ho d. HO 35. All but one of the following antibodies will be detected in the serumk of a Bombay genotype a. Anti-A b. Anti-B c. Anti-H d. Anti-Lewis 36. The system compose of antigens found primarily in saliva nad plasma is a. Lutheran b. Lewis c. P d. Rh 37. In the duffy blood group system, which of the following is true? a. Fya genes are recessive b. Fyb are dominate c. Fya and Fyb genes are codominate d. Fya genes are dominate 38. Which of these is an acquired antibody a. Anti-Lea b. Anti-Jka c. Anti-I d. Anti-N 39. The antigen I is a. Found on al cord cells b. Absent on all cord cells c. A rare antigen d. Not found in Blacks 40. Anti-I is usually best detected in which crossmatch phase a. Room temperature b. 37C c. Coombs phase d. All of these 41. Select the incorrect statement a. Anti-I is opften the causative antibody in case of CHAD9Cold hemagglutinin disease) b. Anti-I reacts best with cord cells c. Anti-I can be found as weak cold agglutinin in the sera of normal individuals d. Anti-I agglutinins are usually clinically insignificant; however, they may mask more significant antibodies, such as anti-P1, anti-M and anti-Lea 42. Anti-Lea a. CAN BE PRODUCED BY Le9a-b+) individuals\ b. Is commonly implicated in HDN c. Is present in 15 of the population d. Does not react with pretreated enzyme cells 43. What percentage of the population lacks the kell antigen? a. 0.02% b. 2% c. 10% d. 90% 44. Select the incorrect statement: a. 90% of the population is kell negative b. Anti-K reacts best in salie at room temperature c. Anti-K can cause HDN d. Next to Rho(D), the Kell antigen is the most immunogenic 45. Anti-K is also known as a. Anti-K1 b. Anti-Mcleod c. Anti-Ku d. Anti-Cellano 46. What is the grequency of the Fy (a-b-)blacks a. 1% b. 9% c. 22% d. 68% 47. Recent findings suggest there is an association between the Fy (a-b-) phenotype and resistance to a. CGD (chronic granulomatous disease b. Malaria c. Syphilis d. Viral hepatitis 48. The antigen Tja is part of which system a. Rh b. MNS c. Kidd d. P 49. Approximastely what percentage of males are Xga positive? a. 12% b. 36% c. 64% d. 88% 50. Approximately what percentage of females are Xga negative? 51. 52. 53. 54. 55. 56. 57. 58. a. 12% b. 36% c. 64% d. 88% When color-coding is used for donor blood labels, Group A is a. Pink b. blue c. Yellow d. Black Wjhat is the standard acceptable color for anti-a grouping serum a. Blue- green b. Colorless c. Red d. Yellow What is the color of the dye added to commercially oprepared anti-B blood grouping serum a. Yellow b. Blue c. Green d. None of the above Anti-a, b serum a. Is used to confirm group O individuals b. Ios obtained from A1B individuals c. Is obtained from group a2B individuals d. Agglutinates cells of all group O indivudlas Which of the following is not suitable medium for suspensions of red cells for blood banking a. Saline b. Serum c. Albumin d. Distilled water Which of the following enzyme is not uysed in blood bank procedures a. Ficin b. Amylase c. Bromelin d. Papain Enzymes prevent detection of antibodies in the a. Kidd system b. Duffy system c. Lewis system d. Rh system The technic used to remove antibody bound to sensitized red cells is called a. Absorption b. Elution c. Titer d. Translocation 59. The Donath-Landsteiner test is associated with a. CGD (cnronic granulomatous disease) b. PCH (paroxysmal cold hemoglobinuria) c. PNH (paroxysmal nocturnal hemoglubinuria) d. PRV (polycythenia rubra vera) 60. A cold agglutinatinin will usually have specificity for the a. D antigen b. e antigen c. I antigen d. K antigen