Online Access Free ASCP-MLT Practice Test

UA & Body Fluids
What is the identification of this crystal seen in a urine with an alkaline pH?

• A.Ammonium biurate
• B.Uric acid
• C.Triple phosphate
• D.Calcium carbonate

Vitamin K dependent factors are those that require Vitamin K for their synthesis in the liver. Vitamin K is an important factor to gamma-glutamyl carboxylase which adds a carboxyl group to glutamic acid residues on factors II, VII, IX and X, as well as Protein S, Protein C. In adding the gamma-carboxyl group to glutamate residues on the immature clotting factors Vitamin K is itself oxidized. Deficiency of Vitamin K due to malabsorption, liver disease, etc. may contribute to bleeding disorders because clotting factor maturation depends on Vitamin K.
Which of these coagulation factors are referred to as "vitamin-K dependent?"

• A.II, VII, IX, X
• B.II, V, IX, XII
• C.I, V, VIII, XIII
• D.XI, XII, Fletcher, Fitzgerald

A key laboratory characteristic by which Mycobacterium bovis can be separated from Mycobacterium tuberculosis is:

• A.Semiquantitative catalase
• B.Growth inhibition by thiopine-2-carboxylic acid hydrazide (T2H)
• C.Ability to take up iron salts from the culture medium
• D.Niacin accumulation when grown on egg based medium

Medical Technology is the profession concerned with performing laboratory analyses

• A.True
• B.False

Streptococcus pyogenes is the correct answer. Streptococcus pneumoniae is alpha-hemolytic which demonstrate a green area of partial hemolysis around the colonies. Staphylococcus aureus will produce complete hemolysis but is catalase positive. Streptococcus agalactiae is beta-hemolytic but only produces a partial clearing of the red blood cells in sheep blood agar.
Complete hemolysis of sheep blood agar as demonstrated by the image below would be seen in which of the following catalase-negative isolates?

• A.Streptococcus pyogenes
• B.Streptococcus agalactiae
• C.Staphylococcus aureus
• D.Streptococcus pneumoniae