Other Blood Groups
Name the phenomenon in which red cells from homozygous people possess more antigens per red cell than do cells from heterozygous people, exhibited by the corresponding antibodies reacting more strongly with cells from homozygous people
Urine that is dark red or port wine in color may be caused by...
An enzymatic reaction in which the rate of reaction is independent of substrate concentration is said to be in:
The anticoagulant of choice for most routine coagulation studies is:
Haemophilus influenzae will not routinely grow on blood agar due to a lack of which necessary factor?
Which Lewis phenotype is likely to be transiently expressed by a pregnant female and result in the development of Lewis antibodies?
What is Le(a-b-)?
The normal color of urine is due to which pigment?
Elevation of which isoenzyme of creatine kinase is indicative of myocardial infarction?
What is Glycoprotein 1b?
A 17-year-old boy visits the emergency department with a painful genital ulcer and inguinal lymphadenopathy. A gram stain of the collected specimen shows gram negative bacilli in a “school of fish” formation. What is the presumptive identification of this organism?
The Duffy null phenotype seems to serve as a protective mechanism against infection with which organism?
What is Plasmodium vivax?
The best TWO tests to differentiate Neisseria meningitidis from Moraxella catarrhalis would be:
What are sugar fermentation and nitrate reduction?
A clear, red urine specimen is received into the laboratory that has a positive chemical test for blood. No intact red blood cells are seen upon microscopic examination. Which analyte is likely to be responsible for these results?
A slender gram negative bacillus was seen on the gram stain of a wound culture from the hand of MMA fighter Ronda Rousey after a fight. Growth on blood and chocolate agar smells like bleach. The organism is motility negative, oxidase positive, and assachrolytic. What is the presumptive identification of this organism?
Which enzyme catalyzes the reversible oxidation of lactate to pyruvate?
The following results are consistent with which disorder of primary hemostasis?
Normal platelet aggregation to collagen, ADP, and epinephrine; decreased agglutination with Ristocetin that is not corrected by the addition of von Willebrand factor