A finger stick WBC count on a 20 yr old female is performed using a standard hemocytometer to count the cells.  100 microliters (uL) of blood was diluted with 1.9 milliliters (mL) of diluent.  50 platelets were counted in 1 square measuring 1mm x 1 mm on one side of a standard hemocytometer.  Hemocytometer depth = 0.1 mm.  Calculate the platelet count.

In the Gelatin agar for Bacillus  identification, what enzyme does Bacillus need to produce in order to hydrolyze Gelatin?

Which of the following is the most acceptable learning objective?

An RDW of 12% would correlate with which finding on the peripheral blood smear?

The sputum sample of an elderly female yields an alpha hemolytic colony on blood and chocolate agar; the MacConkey agar does not yield significant growth. What is the most likely organism present?

What is the earliest nucleated stage of erythrocytic development?

Polycythemia vera can be distinguished from secondary polycythemia by which laboratory assay?

A physician would like to monitor an HIV positive patient for therapeutic response to anti-retroviral therapy. Select the most appropriate test to recommend:

A previously normal, full-term infant developed bilateral conjunctivitis at 2 weeks of age. The conjunctivitis was followed by severe coughing, but the infant remained afebrile. When the infant was 4 weeks old, a chest X-ray showed bilateral interstitial infiltrates. Aerobic bacterial culture grew only minimum amounts of normal flora organisms. Which of the following is the most probable infectious agent?

The role of nuclease in molecular laboratory procedures is to: