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A patient’s glucose result is “flagged” with the comment “ results exceed the upper limit of linearity.” The method’s upper limit of linearity is 700 mg/dL. The technologist prepares a 1 to 5 dilution of the serum specimen with saline and reanalyzes the diluted sample. A result, 152 mg/dL, is displayed. What is the concentration of glucose in this patent’s serum sample?

One of the assays your laboratory carries out requires a 2N HCl.  You have a stock bottle of concentrated HCl with a specific gravity of 1.18 and purity of 36%.  What volume of the concentrated HCl is required to make 250mL of the 2N HCl (MW of HCl = 36.5 Da)?

Which of the following is the correct sequence to follow in method selection?

Is the following statement true or false? Why? “A thinner electrophoretic support is associated with a greater sensitivity.”

Electro-osmosis is the migration of supporting medium counterions and solvent toward the appropriate electrode. This net flow of counterions and solvent is in the opposite direction to the migration of the macromolecules of interest. Which of the following statements best describes the effect of electro-osmosis?

Which of the following best describes the effect of nonspecific binding on the detection limit of an immunoassay?  

Which one of the following statements concerning nephelometry is correct?

Given the following data, calculate the capacity factor for the solute. Chart speed for recording the chromatogram is 1 cm/min Mobile phase flow rate is 1.6 mL/min Migration distance of the void volume indicator is 1.3 cm Migration distance of the solute of interest is 13.2 cm

Considering only the effect of time on electrophoretic separation, the separation of bands ________ with time, and diffusion of bands _______ with time.  

The discontinuous solvent system used to enhance electrophoretic resolution in which movement comes to a stop because of a lack of net charge is: