The therapist develops tentative hypotheses about her patient during which part of an interview?

The Beer-Lambert Law (also called "Beer's Law") defines the relationship between absorbance and what three other factors?

A) Concentration, molar absorptivity, and path length B) Concentration, photon number, and wavelength C) Molar absorptivity, path length, and photon number D) Path length, photon number, and wavelength

Serum vitamin B12 is highly unstable when exposed to light and can tolerate only a single absorbance reading before breaking down. Therefore, it is not possible to generate a standard curve for B12

When the concentration of B12 must be ascertained in a patient specimen, how should the technician go about doing so? A) Calculate the concentration of B12 directly from its absorbance in the solution using Beer's Law. B) Determine the Km and Vmax of B12 and apply those values to Ohm's Law to calculate the concentration of B12. C) Generate a standard curve using a more stable vitamin of similar chemical structure. D) Measure transmittance of B12 and create a standard curve using transmittance against concentration.