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MLS ASCP Exam Questions and Answers
Procainamide
Ans: -Answer: NAPA
-p. 86-Ant antiarrhythmic drug that has a metabolite with the same drug
action
-Procainamide is metabolized to N-Acetylprocainamide (NAPA)
- Must quantify both. Although they have the same drug affect,
difference in half- life may cause NAPA to accumulate in the blood and
produce toxic affects even at therapeutic levels of procainamide.
loose clusters of small spherical microconidia, positive urease
Ans: -Answer: Trichophyton mentagrophytes -Trichophyton is the only
Dermatophyte with two colony types : macroconidia and microconidia. -
T. mentagrophytes characteristically produce "grapelike clusters" of
microconidia. - Positive in the hair perforation test.
Beta -HCG tumor marker
Ans: Answer: chorocarcinoma
-The are are 2 forms of hCG Alpha (common form) and Beta (unique
form)
5HIAA 5-hydroxyindoleacetic acid
Ans: -Answer: carcinoid tumors -5HIAA: primary metabolite of serotonin,
a chemical substance (neurotransmitter) that transmits messages
between nerve cells. -Large quantities of serotonin and 5-HIAA may be
produced by some carcinoid tumors.- Carcinoid tumors are slow-growing
noncancerous or cancerous neuroendocrine masses that can form in the
GI tract, especially in the appendix, and in the lungs.
Proteus vulgaris vs P. mirabilis indole test
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, 2 | Page
Ans: P. vulgaris is indole pos. P. mirabilis is indole neg
Hydatid cyst fluid
Ans: used to neutralize Anti-P1 antibody
Antacid overdose
Ans: Check pH
Prolonged PT, PTT, and thrombin after collecting from catheter
Ans: heparin contamination
mixing study that was performed with a prolonged PTT that
couldn't be corrected
Ans: 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
Ans: check the CaCl/phospholipid reagent delivery
Patient is on coumadin therapy, what will be affected
Ans: Decreased protein C
Lot's of stomatocytes
Ans: Liver disease
Burr cells
Ans: 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
© 2025 All rights reserved
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Ans: 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
Ans: 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
Ans: check for lipemia (elevates HGB)
PBS with an elevated reticulocyte count and howell jolly bodies in
the RBC's
Ans: -Answer: howell jolly bodies= DNA= Wright Stain
-Peppenheimer- Prussian blue stain
-which is not taken up by reticulocytes
-helpful in differentiating the two.
-Reticulocytes=Supravital/ new methylene blue stain
what is composed of DNA?
Ans: howell jolly bodies
-wright Stain
what falsely increases ESR
Ans: vibration, tilting of tube, higher temps, >1 hr test time, improper
mixing of blood, improper dilution
factors decreasing ESR
© 2025 All rights reserved
MLS ASCP Exam Questions and Answers
Procainamide
Ans: -Answer: NAPA
-p. 86-Ant antiarrhythmic drug that has a metabolite with the same drug
action
-Procainamide is metabolized to N-Acetylprocainamide (NAPA)
- Must quantify both. Although they have the same drug affect,
difference in half- life may cause NAPA to accumulate in the blood and
produce toxic affects even at therapeutic levels of procainamide.
loose clusters of small spherical microconidia, positive urease
Ans: -Answer: Trichophyton mentagrophytes -Trichophyton is the only
Dermatophyte with two colony types : macroconidia and microconidia. -
T. mentagrophytes characteristically produce "grapelike clusters" of
microconidia. - Positive in the hair perforation test.
Beta -HCG tumor marker
Ans: Answer: chorocarcinoma
-The are are 2 forms of hCG Alpha (common form) and Beta (unique
form)
5HIAA 5-hydroxyindoleacetic acid
Ans: -Answer: carcinoid tumors -5HIAA: primary metabolite of serotonin,
a chemical substance (neurotransmitter) that transmits messages
between nerve cells. -Large quantities of serotonin and 5-HIAA may be
produced by some carcinoid tumors.- Carcinoid tumors are slow-growing
noncancerous or cancerous neuroendocrine masses that can form in the
GI tract, especially in the appendix, and in the lungs.
Proteus vulgaris vs P. mirabilis indole test
© 2025 All rights reserved
, 2 | Page
Ans: P. vulgaris is indole pos. P. mirabilis is indole neg
Hydatid cyst fluid
Ans: used to neutralize Anti-P1 antibody
Antacid overdose
Ans: Check pH
Prolonged PT, PTT, and thrombin after collecting from catheter
Ans: heparin contamination
mixing study that was performed with a prolonged PTT that
couldn't be corrected
Ans: 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
Ans: check the CaCl/phospholipid reagent delivery
Patient is on coumadin therapy, what will be affected
Ans: Decreased protein C
Lot's of stomatocytes
Ans: Liver disease
Burr cells
Ans: 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
© 2025 All rights reserved
, 3 | Page
Ans: 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
Ans: 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
Ans: check for lipemia (elevates HGB)
PBS with an elevated reticulocyte count and howell jolly bodies in
the RBC's
Ans: -Answer: howell jolly bodies= DNA= Wright Stain
-Peppenheimer- Prussian blue stain
-which is not taken up by reticulocytes
-helpful in differentiating the two.
-Reticulocytes=Supravital/ new methylene blue stain
what is composed of DNA?
Ans: howell jolly bodies
-wright Stain
what falsely increases ESR
Ans: vibration, tilting of tube, higher temps, >1 hr test time, improper
mixing of blood, improper dilution
factors decreasing ESR
© 2025 All rights reserved
