You are given a series of 6 tubes. In the first tube is 4.5 mL of saline. In each of the following tubes is 6 mL of saline. 0.5 mL of serum is added to the first tube and 2 mL of this is then transferred to each of the following tubes. The final 2 mL is discarded. The total (substance) dilution in tube #3 is:

To deterimine the accuracy of the hair-perforation test for Trichophyton species, the clinical laboratory scientist used a known positive culture in parallel with the patient specimen. The culture dish of the control should contain baby hair plus which of the following?

After a meal, a urinalysis sample of an otherwise healthy individual appeared cloudy but had normal chemical and microscopic results. What would be the cause of the increased turbidity in this sample?

Hemolytic Disease of the Fetus and Newborn (HDFN) results from which of the following?

An acid-fast bacillus from a sputum specimen grows on Lowenstein-Jensen medium in 12 days as pale buff colonies. A light test is performed after which there appears to be no color change. The isolate is niacin positive, nitrate positive and tellurite negative. What is the likely identification of the isolate?

Labels on chemicals that are shipped from a manufacturer are required to include what information?

An ICD-9 code is related to:

The following RBC data was obtained on a patient with a hemolytic anemia: RBC                             3.06 x 1012/L Hb                                8.5 g/dL Hct                               25.7% Reticulocyte count       4.2%   This level of reticulocytosis is                     

Convert 750 microliters to milliliters.

How many mL of NaOH is needed to make 1L of 1.0 N NaOH from a 1.025 N NaOH solution?