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These nucleated cells were seen in the peripheral blood of a 21 year old male with a relative and absolute lymphocytosis. The WBC is slightly elevated, and the patient reports feeling fatigued. What is the most appropriate reflex test?

Streptococcus pyogenes and Streptococcus agalactiaecan be used as the positive and negative control respectively for which of the following tests?

In automated hematology cell counters, electronic impedance is often used for:

Which of the following terms refers to the average of the individual values in a sample set?

A test for Hepatitis B virus that yields many false positive results would have:

When performing a manual reticulocyte count, the MLS counts 30 reticulocytes in a total of 1000 RBCs. Given a hemoglobin of 9.5 g/dL and RBC count of 2.8 x 1012/L, calculate the relative reticulocyte count.

A random error is indicated by which of the following Westgard rules?

In statistics, the standard deviation is described as:

Dark-field examination of patient samples are recommended for the detection of:

Pseudomembranous colitis caused by Clostridium difficile is best confirmed by which diagnostic test?