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Blood Bank
| Question | Answer |
|---|---|
| The minimum hemoglobin concentration in a fingerstick from a male blood donor is: | 12.5 g/dL (125 g/L) |
| A cause for permanent deferral of blood donation is: | history of jaundice of uncertain cause |
| According to AABB standards, you may be accepted as a blood donor if you: | had a spontaneous abortion at 2 months of pregnancy, 3 months previously |
| For apheresis donors who donate platelets more frequently than every 4 weeks, a platelet count must be performed prior to the procedure and be at least: | 150 x 10³/µL |
| Prior to blood donation, the intended venipuncture site must be cleaned with a scrub solution containing: | PVP iodine complex |
| During preparation of platelet concentration from whole blood, the blood should be: | cooled towards 20°-24°C |
| The most common cause of post transfusion hepatitis can be detected in donors by testing for: | HBsAG |
| The Western blot is a confirmatory test for the presence of: | anti-HIV-1 |
| The test that is currently used to detect donors who are infected with the AIDS virus is: | anti-HIV 1,2 |
| A commonly used screening method for anti-HIV-1 detection is: | enzyme-labeled immunosorbent assay (ELISA) |
| Rejuvenation of a unit of Red Blood Cells is a method used to : | restore 2,3-DPG and ATP to normal levels |
| A unit of packed cells is split into 2 aliquots under closed sterile conditions at 8 am. The expiration time for each aliquot is now: | the original date of the unsplit unit |
| A unit of Red Blood Cells expiring in 35 days is split into 5 small aliquots using a sterile pediatric quad set and a sterile connecting device. Each aliquot must be labeled as expiring in: | 35 days |
| When platelets are stored on a rotator set on an open bench top, the ambient air temperature must be recorded: | every 4 hours |
| The correct storage temperature for Fresh Frozen Plasma (FFP) is: | -20°C |
| A unit of Red Blood Cells is issued at 9:00 am. At 9:10 am the unit is returned to the Blood Bank. The container has not been entered, but the unit has not been refrigerated during this time span. The best course of action for the technologist is to: | record the return and place the unit back into inventory |
| The optimum storage temperature for Red Blood Cells, Frozen is: | -80°C |
| The optimum storage temperature for Red Blood Cells is: | 4°C |
| If the seal is entered on a unit of Red Blood Cells stored at 1°C to 6°C, what is the maximum allowable storage period, in hours: | 24 |
| The optimum storage temperature for cryoprecipitated AHF is: | -24°C |
| Cryoprecipitated AHF must be transfused within what period of time following thawing and pooling? | 4 hours |
| Platelets prepared in a polyolefin type container, stored at 22°-24° in 50 mL of plasma, and gently agitated can be used for up to: | 5 days |
| The optimum storage temperature for platelets is: | 22°C |
| According to AABB standards, Fresh Frozen Plasma must be infused within what period of time following thawing? | 24 hours |
| Cryoprecipitated AHF, if maintained in the frozen state at -18°C or below, has a shelf life of: | 12 months |
| Once thawed, Fresh Frozen Plasma must be transfused within: | 24 hours |
| An important determinant of platelet viability following storage is: | plasma pH |
| In the liquid state, plasma must be stored at: | 1°-6°C |
| During storage, the concentration of 2,3-diphosphoglycerate (2,3 DPG) decreases in a unit of: | Red Blood Cells |
| All donor blood testing must include: | serological test for syphilis |
| Cryoprecipitated AHF: | is indicated for fibrinogen deficiencies |
| A directed apheresis platelet donation given by a mother for her son should be: | irradiated |
| Irradiation of a unit of Red Blood Cells is done to prevent the replication of donor: | lymphocytes |
| Plastic bag overwraps are recommended when thawing units of FFP in 37°C water baths because they prevent: | the entry ports from becoming contaminated with water |
| What blood component must be prepared within 8 hours after phlebotomy? | Fresh Frozen Plasma |
| Cryoprecipitated AHF contains how many units of Factor VIII? | 80 |
| What blood component contains the most Factor VIII concentration relative to volume? | Cryoprecipitated AHF |
| The most effective component to treat a patient with fibrinogen deficiency is: | Cryoprecipitated AHF |
| A blood component prepared by thawing Fresh Frozen Plasma at refrigerator temperature and removing the fluid portion is: | Cryoprecipitated AHF |
| Upon inspection, a unit of platelets is noted to have visible clots, but otherwise appears normal. The technologist should: | quarantine for Gram stain and culture |
| According to AABB Standard, Platelets prepared from Whole Blood shall have at least: | 5.5 x 10¹° platelets per unit in at least 90% of the units tested |
| According to AABB Standards, at least 90% of all Apheresis Platelets units tested shall contain a minimum of how many platelets? | 3.0 x 10¹¹ |
| Which of the following is proper procedure for preparation of Platelets from Whole Blood? | light spin followed by a hard spin |
| According to AABB standards, what is the minimum pH required for Platelets at the end of the storage period? | 6.2 |
| According to AABB standards, Platelets must be: | gently agitated if stored at room temperature |
| A unit of Whole Blood-derived (random donor) Platelets should contain at least: | 5.5 x 10¹° platelets |
| Platelets prepared by apheresis should contain at least: | 3 x 10¹¹ platelets |
| Leukocyte-Reduced Red Blood Cells are ordered for a newly diagnosed bone marrow candidate. What is the best way to prepare this product? | transfuse through a Log³ leukocyte-removing filter |
| This blood component should be used to prevent HLA alloimmunization of the recipient | Leukocyte-Reduced Red Blood cells |
| To qualify as a donor for autologous transfusion a patients's hemoglobin should be at least: | 11 g/dL (110 g/L) |
| The minimum pre-transfusion testing requirement(s) for autologous donations collected and transfused by the same facility is /R : | ABO and RH Typing only |
| In a quality assurance program, cryoprecipitated AHF must contain a minimum of how many international units of Factor VIII: | 80 |
| The Linked HLA genes on each chromosome constitute A(Np) | Haplotype |
| A blood donor has the genotype: hh, AB. What is his red blood cell phenotype: | O |
| An individual has been sensitized to the little k antigen and has produced anti-k. What is her most probable Kell system genotype: | KK |
| Given the following typing results, what is this donors racial ethnicity? Le(a-b-); Fy(a-b-); Js(a+b+): | African American |
| In an emergency situation, Rh-negative red cells are transfused into an Rh- positive person of the genotype CDe/CDe. The first antibody to develop is: | Anti - c |
| Most blood group systems are inherited as: | Autosomal codominate |
| The mating of an Xg(a+) man and an Xg(a-) woman will only produce: | Xg(a-) sons and Xg(a+) daughters |
| The red cells of a non secretor (se/se) will most likely type as: | Le(a+b-) |
| What phenotype reacts with anti-f: | rr |
| Anti-N is identified in a patient serum. If random cross matches are performed on 10 donor units, how many would be expected to be compatible: | 3 |
| A woman types as Rh-+. She has an anti-c titer of 32 at AHG. Her baby has a negative DAT and is not affected by hemolytic disease of the newborn. What is the fathers most likely Rh phenotype: | R1r |
| What red cell typings are most commonly found in the African American donor population: | Fy(a-b-) |
Created by:
LabChic
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