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MLS ASCP Exam/182 Questions And Answers /A+ Guaranteed Scores
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MLS ASCP Exam/182 QuestionsAnd Answers /A+ Guaranteed
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c antigen is most common in blacks and whites; anti-c would be most
common reactive - -Rh antibodies show enhanced reactivity with enzyme
pretreated cells. The M and Fya antigens are cleaved from enzyme
pretreated cells and therefore there would be no reaction between enzyme
pretreated cells and serum containing anti-M or anti-Fya. The incidence of
the c antigen is 80% in whites and 96% in blacks. The incidence of the E
antigen is 29% in whites and 22% in blacks. Increased reactivity with enzyme
pretreated cells and incompatible results with 8 of 10 donor units is most
likely due to anti-c.
-Procainamide - -NAPA
-loose clusters of small spherical microconidia, positive urease - -
Trichophyton mentagrophytes
-BHCG tumor marker - -chorocarcinoma
-5HIAA - -carcinoid tumors
-Proteus vulgaris vs P. mirabilis indole test - -P. vulgaris is indole pos. P.
mirabilis is indole neg
-Hydatid cyst fluid - -used to neutralize Anti-P1 antibody
-Antacid overdose - -Check pH
-Prolonged PT, PTT, and thrombin after collecting from catheter - -heparin
contamination
-mixing study that was performed with a prolonged PTT that couldn't be
corrected - -DRVVT (Dilute Russell Viper Venom Test)
-two pt's ran in duplicate (PT and PTT). The PTT seemed to always be
prolonged but PT looked ok - -check the CaCl/phospholipid reagent delivery
-Patient is on coumadin therapy, what will be affected - -Decreased protein
C
-Lot's of stomatocytes - -Liver disease
, -Burr cells - -Uremia
-Picture of target cells with hemoglobin C crystals. The white count was high
on instrument 1, so a second instrument was used with a stronger lysing
agent, and the white count was corrected - -anti-lysing target cells are what
increased the white count? Erythrocytes containing hemoglobin C do not lyse
normally (sickle cell diseases)
-A sodium citrate tube was drawn for a HCT on a pt but the hematocrit was
abnormal - -recollect with decreased anticoagulant. high hct (>55%) causes
low plasma so you need less anticoagulant
-Question that gives a red blood cells count, HGB, and HCT. I did the rule of
3 and found that the HGB didn't meet the rule of 3 because it was too high -
-check for lipemia (elevates HGB)
-PBS with an elevated reticulocyte count and howell jolly bodies in the RBC's
- -Prussian blue for howell jolly bodies made of iron. Prussian blue stain,
which is not taken up by reticulocytes, is helpful in differentiating the two.
-what is composed of DNA? - -howell jolly bodies
-what falsely increases ESR - -vibration, tilting of tube, higher temps, >1 hr
test time, improper mixing of blood, improper dilution
-factors decreasing ESR - -Polycythemia, Microcytosis (Hb C), Sickle cells,
spherocytes, Anti-inflammatory medications, Hypogammaglobulinemia,
Hypofibrinogenemia (DIC), High WBC count, Hyperviscosity
-Factors increasing ESR - -Anemia, Macrocytosis, Female gender, Age >50
years, Obesity, Pregnancy, Hypercholesterolemia, cancer, multiple myeloma,
rouleaux, infections, inflammation
-what falsely decreases ESR - -low blood/ room temps, air bubbles, tests <1
hr, improper mixing of blood, improper dilution
-lactic acid collection - -separate from serum and put on ice
-coefficient of variation - -(standard deviation/ mean) X 100
-Carbon dioxide electrode measures what - -Used to measure free carbon
dioxide ions by detecting pH. The change in pH is measured by an internal
pH sensor, which is proportional to the carbon dioxide level.
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