CH 43
Pregnancy testing is based upon the detection of which hormone?
FSH
LH
hCG
TEH
hCG
Which of the following is the most frequently performed procedure in the medical office laboratory?
Hematology
Urinalysis
Chemistry
Microbiology
Urinalysis
Which of the following best defines hematology?
Study of blood chemistry
Study of blood proteins
Study of blood plasma
Study of blood cells
Study of blood cells
What is the danger of a high low-density lipoprotein level?
Too much is excreted in the bile.
It increases risk for coronary artery disease.
It cannot be reversed.
It cannot be used for coronary artery disease risk.
It increases risk for coronary artery disease.
Which of the following is the most common urine specimen collection, performed in the outpatient setting?
Midstream clean-catch
Catheterized
First morning
Random (spot)
Random (spot)
What is the age group in which symptoms of IM are most often observed?
10–15 years
12–20 years
15–25 years
15–40 years
15–25 years
Which of the following is normally included in completely reabsorbed threshold substances?
Creatinine
Amino acids
Protein
Chloride
Protein
Which of the following is the hormone required for the production of new red blood cells?
Hematopoietin
Erythropoietin
Hemoglobin
Plasma
Erythropoietin
Which test measures the concentration of urea in the blood?
PKU
TB
EIA
BUN
BUN
Which of the following is the normal value for a platelet count?
20,000–50,000
50,000–100,000
150,000–450,000
400,000–600,000
150,000–450,000
The pregnancy hormone can be detected in the urine of a pregnant woman as early as:
8 days after conception
11 days after conception
2 days after conception
14 days after conception
11 days after conception
Which of the following is the filtering unit of the kidney?
Renal arteries
Glomerulus
Tubules
Cortex
Glomerulus
Which of the following is required for the synthesis of the heme portion of the hemoglobin molecule?
Calcium
Phosphorus
Iron
Carbon dioxide
Iron
Which of the following best describes erythrocyte indices?
Calculations that provide size and hemoglobin content of RBCs
Provides information for hematocrit
Allows for calculations of oxygen in hemoglobin
Abbreviated MCV, MCA, and MCC
Calculations that provide size and hemoglobin content of RBCs
Which of the following is NOT true regarding the significance of seeing many squamous epithelial cells on microscopic examination?
Has no medical significance
Indicates that the specimen is contaminated with skin cells
Indicates possible squamous cell cancer
Reported as few, moderate, or many
Indicates possible squamous cell cancer
Which organ is responsible for producing cholesterol?
Heart
Kidney
Liver
Spleen
Liver
Which of the following is NOT a major kidney function?
Secretion
Reabsorption
Diffusion
Filtration
Diffusion
Which of the following is the major component of the RBC that transports oxygen?
Serum
Hemoglobin
Plasma
Protein
Hemoglobin
What percentage of North Americans are Rh positive, and what percent are Rh negative?
85% positive; 15% negative
15% positive; 85% negative
75% positive; 25% negative
25% positive; 75% negative
85% positive; 15% negative
Which of the following urine specimens is usually requested when quantitative tests are needed for different substances?
Random
Fasting timed
24-hour
Catheterized
24-hour
How is the Epstein-Barr virus causing infectious mononucleosis primarily transmitted?
Saliva
Injection
Aspiration
Vector
Saliva
Near the end of the blood’s journey through the kidney, in which area are the other substances that have not already been filtered secreted into the urine?
Glomerulus
Proximal convoluted tubule
Henle’s loop
Distal convoluted tubule
Distal convoluted tubule
Which of the following is NOT generally included in the complete blood count (CBC)?
Hemoglobin determination
Hematocrit determination
Erythrocyte sedimentation rate
Red blood cell (RBC) count
Erythrocyte sedimentation rate
Which of the following is the most appropriate action when performing a microscopic examination of a urine specimen?
Use the last night specimen and store it in a refrigerator.
Centrifuge a 5 ml aliquot at 1,000 rpm for 5 minutes.
Pour off the supernatant leaving about 1 ml in the bottom.
Scan the sediment using a high-power objective.
Pour off the supernatant leaving about 1 ml in the bottom.
When placing the sealed tubes into the microhematocrit centrifuge, what must be done before closing the lid?
Place the tubes in slots next to each other.
Place the tubes opposite each other, balancing each other across the centrifuge.
Determine the average values.
Set the timer and adjust the speed.
Place the tubes opposite each other, balancing each other across the centrifuge.