MLS ASCP exam recall questions and answers 2024

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 Lots 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 RBC inclusion 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. patient that had a random glucose >200 and an FPG >126. What do you do next? - 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? - RPR Person tested positive for HIV-1 and HIV-2 but western blot was indeterminate. What do you do? - 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? - K (kell)