ASCP-MLT ASCP Exam Lab Questions

Antidiuretic hormone, or ADH, has the important role of conserving body water by reducing the loss of water in urine by changing the water permeability of the distal tubule and collecting duct. An increase in ADH causes a concentrated urine since the water is retained and absorbed through the permeable membrane. An decrease in ADH causes the collecting ducts to retain very little water, instead it is excreted as urine.

Chemistry

Which of the following action describes the MAJOR property of antidiuretic hormone?

% concentration (expressed as a proportion or ratio) x volume needed = mass of reagent to use

So... 10% (w/v) solution of sodium hydroxide x 200 mL needed = 20 grams of sodium hydroxide

How many grams of sodium hydroxide are required to prepare a 200 ml solution of a 10% (weight per volume) solution? (Atomic weights: Na = 23; 0 = 16; H = 1)

Western blot analysis is frequently utilized as the confirmatory method of HIV detection.

Which of the following assays is routinely used for confirmation of HIV infections:

HLA-DR is a class II MHC.

HLA-A, HLA-B, and HLA-C are all class I MHC.

Which of the following antigens is classified as a Major Histocompatibility Complex

Class II antigen (MHCII)?