Question 6
The morphologic characteristic(s) associated with the Chediak-Higashi syndrome is (are):
Question 7
In this case, with the pre-incubation aPTT mixing study result "corrected" and the post-incubation aPTT mixing study result "not corrected", a coagulation inhibitor should be suspected. Both anti-factor VIII and lupus anticoagulant have been known to be slow-acting and can exhibit this result pattern. If a factor deficiency was present, we should not see a post-incubation prolongation.
Hematology
What may cause the following mixing studies results?
Initial aPTT = 133 seconds
1:1 Mix aPTT pre-incubation = 33 seconds
1:1 Mix aPTT post-incubation = 124 seconds
Question 8
Dce is found in 4% of whites and 44% of blacks.
DCe is found in 42% of whites and 17% of blacks.
DcE is found in 14% of whites and 11% of blacks.
dce is found in 37% of whites and 26% of blacks.
Blood bank
The most common Rh haplotype among whites is:
Question 9
In an alkaline medium, potassium ferricyanide oxidizes hemoglobin to methemoglobin. Further reaction with potassium cyanide produces cyanmethemoglobin which has a maximum absorbance at 540 nm. Color intensity is proportional to total hemoglobin concentration, which is how the hemoglobin levels are measured.
Hematology
In the hemoglobin methodology using potassium ferricyanide the following measurable reaction occurs:
Question 10
Convert the following temperature from Celsius to Fahrenheit
-10 degrees C
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