Question 1

MATCHING
Match the disorder with the diagnostic analyte measured in the laboratory.
-Plasma/urine metanephrines

Accepted Answer

A) Gastroenteropancreatic endocrine tumor 
B) Tumor of adrenal medullary chromaffin cells 
C) Pineal gland tumor 
D) Neuroblastoma 
A) Gastroenteropancreatic endocrine tumor 
B) Tumor of adrenal medullary chromaffin cells 
C) Pineal gland tumor 
D) Neuroblastoma

Question 2

The use of tricycle antidepressants by an individual may produce incorrect results in the measurement of norepinephrine and normetanephrine during testing for pheochromocytoma.How will results be affected and why?

Accepted Answer

A)  The results will be falsely elevated because of inhibition of monoamine reuptake. 
B)  The results will be falsely decreased because of increased synthesis of monoamine oxidase. 
C)  The results will be falsely elevated because these drugs increase synthesis of dopamine. 
D)  The results will be falsely decreased because these drugs inhibit tyrosine hydroxylase. 
A)  The results will be falsely elevated because of inhibition of monoamine reuptake. 
B)  The results will be falsely decreased because of increased synthesis of monoamine oxidase. 
C)  The results will be falsely elevated because these drugs increase synthesis of dopamine. 
D)  The results will be falsely decreased because these drugs inhibit tyrosine hydroxylase.

Question 3

Pheochromocytomas:

Accepted Answer

A)  produce hypotension (decreased blood pressure). 
B)  tend to secrete serotonin in increased amounts. 
C)  are benign in the majority of cases. 
D)  are tumors derived from enterochromaffin cells. 
A)  produce hypotension (decreased blood pressure). 
B)  tend to secrete serotonin in increased amounts. 
C)  are benign in the majority of cases. 
D)  are tumors derived from enterochromaffin cells.

Exam 26: Catecholamines and Serotonin

MATCHING Match the disorder with the diagnostic analyte measured in the laboratory. -Plasma/urine metanephrines

The use of tricycle antidepressants by an individual may produce incorrect results in the measurement of norepinephrine and normetanephrine during testing for pheochromocytoma.How will results be affected and why?

Pheochromocytomas:

Clinical Chemistry, molecular Diagnostics, and Laboratory Medicine

Selection and Analytical Evaluation of Methodswith Statistical Techniques

Clinical Evaluation of Methods

Evidence-Based Laboratory Medicine

Establishment and Use of Reference Values

Specimen Collection, processing, and Other Preanalytical Variables

Quality Management

Principles of Basic Techniques and Laboratory Safety

Optical Techniques

Electrochemistry and Chemical Sensors

Electrophoresis

Chromatography

Mass Spectrometry

Enzyme and Rate Analyses

Immunochemical Techniques

Automation

Point-Of-Care Instrumentation

Amino Acids, peptides, and Proteins

Serum Enzymes

Tumor Markers and Cancer Genes

Kidney Function Test-Screatinine, Urea, and Uric Acid

Carbohydrates

Lipids, lip-Oproteins, apolipoproteins, and Other Cardiac Risk Factors

Electrolytes and Blood Gases

Hormones

Vitamins, Trace Elements, and Nutritional Assessment

Hemoglobin, Iron, and Bilirubin

Porphyrins and Porphyrias

Therapeutic Drugs and Their Management

Clinical Toxicology

Toxic Metals

Diabetes

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Kidney Disease

Physiology and Disorders of Water,Electrolyte,and Acid-Base Metabolism

Liver Disease

Gastrointestinal and Pancreatic Diseases

Disorders of Bone and Mineral Metabolism

Disorders of the Pituitary

Disorders of the Adrenal Cortex

Thyroid Disorders

Reproduction-Related Disorders

Pregnancy and Prenatal Testing

Newborn Screening and Inborn Errors of Metabolism

Pharmacogenetics

Principles of Molecular Biology

Nucleic Acid Techniques and Applications

Genomes and Nucleic Acid Alterations

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