Media Lab Simulator 1

Electrophoretic separation of hemoglobin fundamentally relies on? a. Weight differences of molecules b. Electrical charge differences of molecules c. Concentration differences of molecules d. Shape variations of molecules

Electrical charge differences of molecules

With the exception of beta thalassemia minima, which hemoglobin is decreased in beta thalassemia? a. Hb A b. Hb A2 c. Hb F d. Hb S

Hb A

What transferrin saturation level would be indicative to investigate further for hereditary hemochromatosis (HH)? a. 40% b. 45% c. 35% d. 25%

45%

Your screen cells are 3+ at immediate spin and weak (W)+ at AHG. Your autocontrol is negative for both phases. Some of your antibody panel cells are 3+ at immediate spin and negative at AHG. What should you suspect? a. A warm autoantibody is present b. A cold antibody may be present c. Bad specimen draw d. A warm reacting alloantibody

A cold antibody may be present

The decrease in the rate of production of a globin chain due to a partial or total deletion of the genetic code.

Alpha thalassemia

In the condition kernicterus, the abnormal accumulation of bilirubin occurs in what tissue? a. Brain b. Liver c. Kidney d. Blood

Brain

During data analysis in flow cytometry, how are cells gated? a. By placing a gate around cells with the same light-scattering. b. By placing a gate around cells with different light-scattering. c. By placing a gate around cells with different fluorescent properties. d. By placing a gate around cells that have no fluorescence.

By placing a gate around cells with the same light-scattering.

Increased concentrations of alpha-fetoprotein (AFP) in adults are MOST characteristically associated with? a. Hepatocellular carcinoma b. Alcoholic cirrhosis c. Chronic active hepatitis d. Multiple myeloma

Hepatocellular carcinoma

Which class of antibody can agglutinate erythrocytes (RBCs) after anti-human globulin (AHG) is added to the test tube? a. IgA b. IgE c. IgG d. IgM

IgG

Which one of the following statements concerning Tamm-Horsfall protein is FALSE? a. It is the protein that is predominantely detected by a urine reagent strip test. b. Hyaline casts are formed by this protein in the distal tubule. c. It acts as a coating and lubricant in the tubules. d. It is produced by the tubules.

It is the protein that is predominantely detected by a urine reagent strip test.

Which of the following is true regarding the Lutheran blood group system? a. Antii-Lua most often is IgG b. Anti-Lub is always IgM c. Lua is a high frequency antigen d. Lub is a high frequency antigen

Lub is a high frequency antigen

All of the following are reasons for conducting compatibility testing EXCEPT? a. Prevent recipient alloimmunization b. Verify ABO and Rh c. Select proper blood products d. Detect antibodies against donor cells

Prevent recipient alloimmunization

The portion of a tapeworm used for attachment to the host's intestine is called the? a. Hexacanth b. Proglottid c. Rostellum d. Scolex

Scolex

When an automated or semi-automated method is used to read urine reagent strips, quality control testing must be performed at least? a. Once a week. b. Once per month. c. With each new instrument operator. d. Every day of patient testing and when a new bottle is opened.

Every day of patient testing and when a new bottle is opened.