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Upon review of a sputum gram stain, the technician notes that all the neutrophil nuclei in the smear are stained dark purple. The best explanation for this finding is:

A cerebrospinal fluid specimen containing only 2 drops of CSF was collected by a lumbar puncture from a febrile 25-year-old male and was submitted for a stat gram stain and culture. The direct specimen gram stain was reported as many neutrophils and no microorganisms seen. The remaining drop of CSF should be inoculated to:

The MacConkey (MAC) plate is considered what type of media?

What is the hemolysis results for Streptococcus pyogenes?

A 4 year old is admitted with symptoms of meningitis and a gram stain of CSF reveals, small gram negative coccobacilli. After 24 hours, small, moist, gray/tan colonies are found on the chocolate agar only. Which of the following biochemical data would be consistent with this isolate?

You receive a urine sample for culture in the microbiology lab.  The urine does not have preservative in it.  The lab is extremely busy and you will not have time to process the urine for at least two hours.  What should you do with the urine sample?

A sputum sample is received in the laboratory and a direct gram stain is performed.  >25 epithelial cells/LPF are observed.  What is the next appropriate step?

Which of the following is true of Anti-Jka?

Which of the following is true of Anti-Fya?

A patient with a positive DAT needs to be phenotyped for the Fya antigen.  What reagent can be used on red blood cells to ensure accurate typing?