Mode is defined as the number that occurs most frequently in a set of numbers.
The value that occurs most frequently in a set of results or values would be termed:
A cardiac risk profile is performed in:
The personal protective equipment (PPE) that is used in the laboratory to protect the personnel when performing tests on patient blood samples is which of the following:
Normocytic- G6PD deficiency, Malaria
Microcytic- Iron deficiency, Thalassemia
Macrocytic- Chronic Liver Disease, Vitamin B12 deficiency
Hematology
Match the disease conditions with appropriate red cell size classification
1. G6PD deficiency, Malaria
2. Iron deficiency, Thalassemia
3. Chronic Liver Disease, Vitamin B12 deficiency
1. B
2. C
3. A
Granular casts are composed of plasma protein aggregates and cellular remnants. Granular casts appear as cylinders of coarse, or fine, highly refractive particles.
Broad casts or "renal failure' casts are formed in the collecting ducts as the result of urinary stasis and are two to six times the size of other types of casts. Any type of cast can be a broad cast. Broad casts are typically seen in patients with advanced renal failure.
Hyaline casts, the type most commonly seen in urine sediment, have a refractive index similar to the urine in which they are suspended. For this reason, hyaline casts will appear almost invisible under brightfield microscopy, but are easily of seen by phase-contrast microscopy.
Match the following descriptions of casts with their appropriate name:
1. Casts with highly refractive particles
2. "Renal failure" cast
3. Low refractive index
After collection all blood should be stored at 1 - 6oC, unless it is going to be used as a source of platelets.
A refrigerator used to store whole blood must be able to maintain a temperature in the ranges of:
Creatinine clearance tests are utilized to estimate the glomerular function of the kidney. The creatitine clearance calculation is defined as the volume of plasma that is cleared of creatinine by the kidney per unit of time and uses the following formula:
creatinine clearance = Urine creatinine conc x Volume / Plamsa creatinine conc
Creatinine clearance measurements have a recommended specimen requirement = 24-hour urine collection.
Which of the following tests would be useful in the assessment of glomerular filtration:
Antibodies in the Rh system typically exhibit which one of the following characteristics?
The disc diffusion method for antibiotic susceptibility testing is the Kirby-Bauer method. The agar used for this procedure is Meuller-Hinton.
Which of the following media is commonly used when performing the Kirby-Bauer disk diffusion?
Nucleated RBCs may be seen in the peripheral blood in cases of beta thalassemia major. Nucleated RBCs are usually not found in peripheral blood in cases of beta thalassemia minor and beta thalassemia intermedia, and would not be a finding in beta thalassemia minima.
Nucleated RBCs are most likely to be seen in the peripheral blood of which of these beta thalassemias?
Class C fires involve:
Question options:
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?
The anticoagulant present in a light-blue stopper tube is:
A monoclonal B-cell population (Kappa or Lambda predominant) with expression of CD19, CD20, CD23, and co-expression of CD5 is consistent with which of the following?
The second choice is correct. Standard Precautions means to treat blood, all body fluids, all secretions (except sweat), all excretions, non-intact skin, and mucous membranes as if they were infectious. The purpose of this rule is to ensure the safety of and to protect those who come into contact with potentially infectious material.
Which one statement about Standard Precautions is most correct?
