MLS ASCP EXAMS WITH CORRECT
ANSWERS
1. Procainamide - ANSWER-NAPA
2. loose clusters of small spherical microconidia, positive urease -
ANSWER-Trichophyton mentagrophytes
3. BHCG tumor marker - ANSWER-chorocarcinoma
4. 5HIAA - ANSWER-carcinoid tumors
5. Proteus vulgaris vs P. mirabilis indole test - ANSWER-P. vulgaris is indole
pos. P. mirabilis is indole neg
6. Hydatid cyst fluid - ANSWER-used to neutralize Anti-P1 antibody
7. Antacid overdose - ANSWER-Check pH
8. Prolonged PT, PTT, and thrombin after collecting from catheter -
ANSWER-heparin contamination
9. mixing study that was performed with a prolonged PTT that couldn't be
corrected - ANSWER-DRVVT (Dilute Russell Viper Venom Test)
10. two pt's ran in duplicate (PT and PTT). The PTT seemed to always
be prolonged but PT looked ok - ANSWER-check the CaCl/phospholipid
reagent delivery
,11. Patient is on coumadin therapy, what will be affected - ANSWER-
Decreased protein C
12. Lot's of stomatocytes - ANSWER-Liver disease
13. Burr cells - ANSWER-Uremia
14. 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 - ANSWER-
anti-lysing target cells are what increased the white count?
Erythrocytes containing hemoglobin C do not lyse normally (sickle cell
diseases)
15. A sodium citrate tube was drawn for a HCT on a pt but the
hematocrit was abnormal - ANSWER-recollect with decreased
anticoagulant. high hct (>55%) causes low plasma so you need less
anticoagulant
16. 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 - ANSWER-check for lipemia (elevates HGB)
17. PBS with an elevated reticulocyte count and howell jolly bodies in
the RBC's - ANSWER-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.
18. what is composed of DNA? - ANSWER-howell jolly bodies
, 19. what falsely increases ESR - ANSWER-vibration, tilting of tube,
higher temps, >1 hr test time, improper mixing of blood, improper
dilution
20. factors decreasing ESR - ANSWER-Polycythemia, Microcytosis (Hb
C), Sickle cells, spherocytes, Anti-inflammatory medications,
Hypogammaglobulinemia, Hypofibrinogenemia (DIC), High WBC count,
Hyperviscosity
21. Factors increasing ESR - ANSWER-Anemia, Macrocytosis, Female
gender, Age >50 years, Obesity, Pregnancy, Hypercholesterolemia,
cancer, multiple myeloma, rouleaux, infections, inflammation
22. what falsely decreases ESR - ANSWER-low blood/ room temps, air
bubbles, tests <1 hr, improper mixing of blood, improper dilution
23. lactic acid collection - ANSWER-separate from serum and put on
ice
24. coefficient of variation - ANSWER-(standard deviation/ mean) X
100
25. Carbon dioxide electrode measures what - ANSWER-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.
26. patient that had a random glucose >200 and an FPG >126. What
do you do next? - ANSWER-diagnosis with diabetes mellitus.
27. (need secondary confirmation from 4 criteria. FRG >126,
Random glucose >200, ogtt >200, or Hb A1c >6.5)
ANSWERS
1. Procainamide - ANSWER-NAPA
2. loose clusters of small spherical microconidia, positive urease -
ANSWER-Trichophyton mentagrophytes
3. BHCG tumor marker - ANSWER-chorocarcinoma
4. 5HIAA - ANSWER-carcinoid tumors
5. Proteus vulgaris vs P. mirabilis indole test - ANSWER-P. vulgaris is indole
pos. P. mirabilis is indole neg
6. Hydatid cyst fluid - ANSWER-used to neutralize Anti-P1 antibody
7. Antacid overdose - ANSWER-Check pH
8. Prolonged PT, PTT, and thrombin after collecting from catheter -
ANSWER-heparin contamination
9. mixing study that was performed with a prolonged PTT that couldn't be
corrected - ANSWER-DRVVT (Dilute Russell Viper Venom Test)
10. two pt's ran in duplicate (PT and PTT). The PTT seemed to always
be prolonged but PT looked ok - ANSWER-check the CaCl/phospholipid
reagent delivery
,11. Patient is on coumadin therapy, what will be affected - ANSWER-
Decreased protein C
12. Lot's of stomatocytes - ANSWER-Liver disease
13. Burr cells - ANSWER-Uremia
14. 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 - ANSWER-
anti-lysing target cells are what increased the white count?
Erythrocytes containing hemoglobin C do not lyse normally (sickle cell
diseases)
15. A sodium citrate tube was drawn for a HCT on a pt but the
hematocrit was abnormal - ANSWER-recollect with decreased
anticoagulant. high hct (>55%) causes low plasma so you need less
anticoagulant
16. 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 - ANSWER-check for lipemia (elevates HGB)
17. PBS with an elevated reticulocyte count and howell jolly bodies in
the RBC's - ANSWER-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.
18. what is composed of DNA? - ANSWER-howell jolly bodies
, 19. what falsely increases ESR - ANSWER-vibration, tilting of tube,
higher temps, >1 hr test time, improper mixing of blood, improper
dilution
20. factors decreasing ESR - ANSWER-Polycythemia, Microcytosis (Hb
C), Sickle cells, spherocytes, Anti-inflammatory medications,
Hypogammaglobulinemia, Hypofibrinogenemia (DIC), High WBC count,
Hyperviscosity
21. Factors increasing ESR - ANSWER-Anemia, Macrocytosis, Female
gender, Age >50 years, Obesity, Pregnancy, Hypercholesterolemia,
cancer, multiple myeloma, rouleaux, infections, inflammation
22. what falsely decreases ESR - ANSWER-low blood/ room temps, air
bubbles, tests <1 hr, improper mixing of blood, improper dilution
23. lactic acid collection - ANSWER-separate from serum and put on
ice
24. coefficient of variation - ANSWER-(standard deviation/ mean) X
100
25. Carbon dioxide electrode measures what - ANSWER-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.
26. patient that had a random glucose >200 and an FPG >126. What
do you do next? - ANSWER-diagnosis with diabetes mellitus.
27. (need secondary confirmation from 4 criteria. FRG >126,
Random glucose >200, ogtt >200, or Hb A1c >6.5)
