When using an electronic cell counter, which of the following results can occur in the presence of a cold
agglutination? a) increased MCV and decreased RBC b) increased MCV and normal RBC c) decreased
MCV and increased
...
When using an electronic cell counter, which of the following results can occur in the presence of a cold
agglutination? a) increased MCV and decreased RBC b) increased MCV and normal RBC c) decreased
MCV and increased MCHC d) decreased MCV and RBC - ✔✔a) increased MCV and decreased RBC
Cerebrospinal fluid for glucose assay should be: a) refrigerated b) analyzed immediately c) heated to 56
degree C d) stored at room temp after centrifugation - ✔✔b) analyzed immediately
The major crossmatch will detect: a) group A patient mistyped as group O b) unexpected red cell
antibody in the donor unit c) Rh-neg donor unit mislabeled as Rh-Pos d) recipient antibody directly
against antigens on the donor red cells - ✔✔d) recipient antibody directly against antigens on the donor
red cells
The anion gap is useful for quality control of laboratory reselts for a) amino acids and proteins b) blood
gas anaylses c) sodium, potassium, chloride and total C02 d) calcium, phosphorus and magnesium -
✔✔c) sodium, potassium, chloride and total C02
A common cause of respiratory alkalosis is a) vomitting b) starvation c) asthma d) hyperventilation -
✔✔d) hyperventilation
Blood is diluted 1:200, and a platelet count is performed. 180 platelets were counted in the center
square millimeter on one side of the hemacytometer and 186 on the other side/ The total platelet count
is: a) 146 x 10³/μL (146 x 10⁹/L) b)183 x 10³/μL (183 x 10⁹/L) c)366 x 10³/μL (3666 x 10⁹/L) d)732 x 10³/μL
(732 x 10⁹/L) - ✔✔c)366 x 10³/μL (3666 x 10⁹/L)
When staining acid-fast bacilli with Truant auramine-rhodamine stain, potassium permanganate is used
a a) decolorizing agent b) quenching agent c) mordant d) dye - ✔✔b) quenching agent
A first morning sputum is received for culture of acid-fast bacilli. It is digested and concentrated by the
N-acetyl-L-cysteine alkali method. Two Sabouraud dextrose slants are incubated in the dark at 35ºC with
5%-10% CO2. The smear reveal acid-fast bacilli, but the slants show no growth after 8 weeks.
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