FC Flashcards
Prolonged coagulation results of a patient with hematocrit value of >55%. What to do?
a. Recollect specimen and decrease the amount of anticoagulant
B. Recollect specimen and increase the amount of anticoagulant
c. Recollect specimen and decrease the amount of blood
d. Recollect specimen and Increase the amount of blood
A
Note: prolonged (excess anticoag) usually seen in px with polycythemia vera (prolonged coag result)
The steam autoclave method of sterilization requires:
a. 15 lb of pressure for 15 minutes
b. Dry heat for 20 minutes
c. A maximum temperature of 100°C
d. A source of ethylene oxide
A
Note: 121°C, 15psi, 15 -30mins
Which of the following can cause hyponatremia?
a. Diabetes insipidus
b. Hyperglycemia
c. Hyperaldosteronism
B (diabetic hyperosmolarity)
Note: DI at hyperaldosteronism (inc. Na)
Which of the following can result to decreased ESR?
a. Slightly tilted ESR tube
b. High room temperature
c. Use of heparin as anticoagulant
d. Delayed testing of specimen
D
Note: cause crenation of RBC
What is the correct sash position for most blosafety cabinets?
8-10 at a level of the axilla
The H antigen is found in lowest concentration on what phenotype of red blood cell?
a. Group B
b. Group A1B
c. Group A2B
d. Group O
B
Highest conc and strongest rxn w/ anti-H = O
O A2 B A2B A1 A1B
Based on the results below, what is the next step in determination of the patient’s ABO/Rh type?
Anti-A 4+
Anti-B 4+
Anti-D 4+
A1 cells 0
B cells 0
a. No further testing required, interpret as AB, D-positive
b. Perform Du testing
c. Repeat ABO red cell typing and include a control
d. Add room temperature incubation with ABO red cell typing
C
What is the purpose of potassium permanganate when staining acid-fast bacilli with Truant auramine-rhodamine stain?
a. Decolorizing agent
b. Dye
c. Mordant
d. Quenching agent
D
Only 2ml of blood is collected in a vacuum tube containing EDTA that is designed for 7ml draw. Which of the following result can be expected of this sample is used?
a. Falsely decreased RBC count
b. Falsely elevated hemoglobin
c. ESR value not affected
d. Erroneously decreased microhematocrit
D
Laboratory characteristics of malabsorption syndrome due to pancreatic insufficiency include:
a. Increased fecal fat
b. Fecal leukocytes
c. Positive Clinitest
d. Fecal occult blood
A
Note: pancreatic insufficiency (kulang ang enzyme)
Which of the following is an anti-asthmatic drug?
a. Ethosuximide
b. Tacrolimus
c. Theophylline
d. Methotrexate
C
Note: ethosuximide (anticonvulsant)
Tacrolimus (immunosuppressive)
Methotrexate (antioncoplastic/chemothrapeutic)
During sweat collection, a consideration that can result in a falsely high result is:
a. High ambient temperature
b. Evaporation
c. Preparation of area with type 1 water
d. High sweat rate
B
Evaporation- conc. of electrolytes (Cl-) due to water evaporation
CSF for culture arrived late in the laboratory, the MLS only managed to perform Gram stain in his shift, what should the technologist do with the specimen?
a. Freeze at - 20 deg * C
b. Incubate at 37 deg * C
c. Refrigerate at 4 deg * C - 6 deg * C
d. Store at room temperature for no longer than 24 hours
B
The drug procainamide is prescribed to treat cardiac arrhythmia. What biologically active live metabolite of procainamide is often measured simultaneously?
a. Phenobarbital
b. Quinidine
c. N-acetyl procainamide
d. Lidocaine
Furazolidone susceptibility is a test used to differentiate?
a. Staphylococcus from Micrococcus
b. Staphylococcus from Pseudomonas
c. Streptococcus from Micrococcus
d. Staphylococcus from Streptococcus
Presence of cold agglutinins will have what effect in most automated hematology analyzers?
a. ⬆️RBC count, ⬆️MCV, ⬇️MCHC
b. ⬆️RBC count, ⬆️MCV, ⬆️MCHC
c. ⬇️RBC count, ⬆️MCV, ⬆️MCHC
d. ⬇️RBC count, ⬇️MCV, ⬆️MCHC
