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Blood plasma will contain coagulation proteins, but not in a clotted tube where serum is present.
Blood plasma will contain coagulation proteins, but not in a clotted tube where serum is present. Blood serum contains each of the following substances except:A . Water B. Sugars C. Coagulation proteins D. ElectrolytesView AnswerAnswer: C
DAT (Direct Antiglobulin Test).
DAT (Direct Antiglobulin Test). When AHG or Coombs serum is used to demonstrate that red cells are antibody coated in vivo, the procedure is termed:A . Indirect technique B. Direct technique C. Hemagglutination technique D. Hemolysis techniqueView AnswerAnswer: C
Acute intravascular hemolysis as the result of a blood transfusion is most often associated with which of the following causes?
Acute hemolytic transfusion reactions are most commonly due to ABO-incompatible blood being transfused to a recipient with naturally occurring ABO alloantibodies (anti-A, anti-B, anti A,B). Acute intravascular hemolysis as the result of a blood transfusion is most often associated with which of the following causes?A . Transfusion of ABO incompatible...
What is the first thing a phlebotomist should do in the event of an accidental needle stick?
What is the first thing a phlebotomist should do in the event of an accidental needle stick?A . go to the employee health service and get a tetanus booster B. leave the area so that the patient does not notice the injury C. decontaminate the site and fill out an...
Which of the following genotypes cause beta thalassemia minor?
Which of the following genotypes cause beta thalassemia minor?A . B/B B. B+/B C. B0/B D. B0/B0View AnswerAnswer: B
Why do so few patients transfused with un-crossmatched red cells in an emergency experience a hemolytic transfusion reaction?
Hemolytic transfusion reactions seldom occur because the incidence of unexpected antibodies in random patients is relatively low, e.g., 3-5% is sometimes cited. Being transfused with O Rh negative RBC is irrelvant if you have an unexpected antibody like anti-K or anti-c. Incompatible red cells may "bleed out" but only if...
An international, nonprofit organization that establishes standards of best current practice for clinical laboratories is
An international, nonprofit organization that establishes standards of best current practice for clinical laboratories isA . Centers for Disease Control and Prevention (CDC) B. Commission on Office Laboratory Accreditation (COLA) C. Clinical Laboratory Standards Institute (CLSI) D. the Joint CommissionView AnswerAnswer: C
Complete hemolysis of sheep blood agar as demonstrated by the image below would be seen in which of the following catalase-negative isolates?
Streptococcus pyogenes is the correct answer. Streptococcus pneumoniae is alpha-hemolytic which demonstrate a green area of partial hemolysis around the colonies. Staphylococcus aureus will produce complete hemolysis but is catalase positive. Streptococcus agalactiae is beta-hemolytic but only produces a partial clearing of the red blood cells in sheep blood agar....
Hybridization is a technique used to determine presence of target DNA or RNA by adding a synthetic strand that binds by complementary base pairing to the target.
Hybridization is a technique used to determine presence of target DNA or RNA by adding a synthetic strand that binds by complementary base pairing to the target. Microbiology In molecular diagnostic testing, hybridization employs complementary base pair binding of a synthetic strand to DNA or RNA. A. true B. falseView...
Which of the following describes the Westgard multi-rule 22S?
The Westgard multi-rule 22S describes the scenario where two consecutive data points fall outside +2SD or -2SD. If this occurs, then the run must be rejected. This situation is most likely caused by a systematic error. Which of the following describes the Westgard multi-rule 22S?A . Two control data points...
