MLS ASCP Exam Questions and
Answers (2024/2025) (Verified
Answers) Graded A+
Procainamide - CORRECT-NAPA
loose clusters of small spherical microconidia, positive urease - CORRECT-Trichophyton
mentagrophytes
BHCG tumor marker - CORRECT-chorocarcinoma
5HIAA - CORRECT-carcinoid tumors
Proteus vulgaris vs P. mirabilis indole test - CORRECT-P. vulgaris is indole pos.
P.mirabilis is indole neg
Hydatid cyst fluid - CORRECT-used to neutralize Anti-P1 antibody
Antacid overdose - CORRECT-Check pH
Prolonged PT, PTT, and thrombin after collecting from catheter - CORRECT-heparin
contamination
mixing study that was performed with a prolonged PTT that couldn't be corrected -
CORRECT-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 - CORRECT-check the CaCl/phospholipid reagent delivery
Patient is on coumadin therapy, what will be affected - CORRECT-Decreased protein C
Lot's of stomatocytes - CORRECT-Liver disease
Burr cells - CORRECT-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 - CORRECT-anti-lysing target cells are what increased
thewhite 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 -
CORRECT-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 - CORRECT-check for
lipemia (elevates HGB)
PBS with an elevated reticulocyte count and howell jolly bodies in the RBC's -
CORRECT-Prussian blue for howell jolly bodies made of iron. Prussian blue stain,
whichis not taken up by reticulocytes, is helpful in differentiating the two.
what is composed of DNA? - CORRECT-howell jolly bodies
what falsely increases ESR - CORRECT-vibration, tilting of tube, higher temps, >1 hr test
time, improper mixing of blood, improper dilution
factors decreasing ESR - CORRECT-Polycythemia, Microcytosis (Hb C), Sickle cells,
spherocytes, Anti-inflammatory medications, Hypogammaglobulinemia,
Hypofibrinogenemia (DIC), High WBC count, Hyperviscosity
Factors increasing ESR - CORRECT-Anemia, Macrocytosis, Female gender, Age >50
years, Obesity, Pregnancy, Hypercholesterolemia, cancer, multiple myeloma, rouleaux,
infections, inflammation
what falsely decreases ESR - CORRECT-low blood/ room temps, air bubbles, tests <1
hr,improper mixing of blood, improper dilution
lactic acid collection - CORRECT-separate from serum and put on ice
coefficient of variation - CORRECT-(standard deviation/ mean) X 100
Carbon dioxide electrode measures what - CORRECT-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.
patient that had a random glucose >200 and an FPG >126. What do you do next? -
CORRECT-diagnosis with diabetes mellitus.
(need secondary confirmation from 4 criteria. FRG >126, Random glucose >200, ogtt
>200, or Hb A1c >6.5)
Man tested positive for syphilis 2 years ago but may have again, how would you test
him? - CORRECT-RPR
Person tested positive for HIV-1 and HIV-2 but western blot was indeterminate. What do
you do? - CORRECT-repeat western blot in a month.
There was a positive DAT on cord blood; mother is Rh pos, baby is Rh neg. What is
most likely coating the baby's red cells? - CORRECT-K (kell)
