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Chemistry Certification

Subject : certifications
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. This method employs a highly specific antibody to thyroxine






2. Lithium therapy is widely used in the treatment of...






3. A reciprocal relationship exists between...






4. A new method is being evaluated. A recovery experiment is performed with the following results: 0.9 mL serum sample + 0.1 mL H20 = 89 mEq/L 0.9 mL serum sample + 0.1 mL analyte std. @ 800 mEq/L = 161 mEq/L The percent recovery of the added analyt






5. An electrode has a silver/silver chloride anode and a platinum wire cathode. It is suspended in KCl solution and separated from the blood to be analyzed by a selectively permeable membrane. Such an electrode is used to measure...






6. Serum and urine copper levels are assayed on a hospital patient with the following results: Patient Serum Cu: 58 ug/dL; Reference Value:70-140 ug/dL Patient Urine Cu: 83 ug/dL ; Reference Value: < 40 ug/dL This is most consistent with...

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7. A fresh urine sample is received for "porphyrins" or "porphyria" without further information or specifications. Initial analysis should include...






8. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...






9. The most common type of congenital adrenal hyperplasia associated with increased plasma concentrations of 17 a-hydroxyprogesterone and increased urinary excretion of pregnanetriol is...






10. When the exact concentration of the solute of a solution is known and is used to evaluate the concentration of an unknown solution - the known solution is...






11. Patients with Cushing's syndrome exhibit...






12. This elevates carboxyhemoglobin?






13. A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL and a 2-hour postprandial glucose concentration of 105 mg/dL. The statement that best describes this patient's fasting serum glucose concentration is...






14. The concentration of serum carotene is affected MOST by...






15. This disease is associated with the greatest elevation of lactate dehydrogenase isoenzyme 1?






16. The buffering capacity of blood is maintained by a reversible exchange process between bicarbonate and...






17. When myocardial infarction occurs - the first enzyme to become elevated is...






18. Major actions of angiotensin II include...






19. In electrophoresis of serum proteins - arifacts at the application point are most frequently caused by...






20. The following results were obtained in a creatinine clearance evaluation: Urine concentration 84 mg/dL Urine volume 1440 mL/24 hr Serum concentration 1.4 mg/dL Body surface area 1.60 m2 (average = 1.73 m2) The creatinine cle~trance in mL/min is...






21. A patient had the following serum results: Na+ 140 mEq/L K+ 4.0 mEq/L Glucose 95 mg/dL BUN 10 mg/dL Which osmolality is consistent with these results?






22. A spectrophotometer is being considered for purchase by a small laboratory. This specification reflects the spectral purity of the instrument






23. One international unit of enzyme activity is the amount of enzyme that - under specified reaction conditions of substrate concentration - pH - and temperature - causes utilization of substrate at the rate of...






24. An electrophoretic separation of lactate dehydrogenase isoenzymes that demonstrates an elevation in LD-l and LD-2 in a "flipped" pattern is consistent with...






25. In developing the reference for a new EIA for CEA - the range for the normal population was broader than that published by the vendor. Controls are acceptable with a narrow coefficient of variation. This may be explained by...






26. This is a characteristic shared by lactate dehydrogenase - malate dehydrogenase - isocitrate dehydrogenase - and hydroxybutyrate dehydrogenase?






27. Which blood gas electrode is composed of calomel and glass?






28. A patient has signs and symptoms suggestive of acromegaly. The diagnosis would be confirmed if the patient had...






29. Measurement of total T4 by competitive protein binding or displacement is based on the specific binding properties of...






30. Testing for the diagnosis of lead poisoning should include...






31. Most most likely to be ordered in addition to serum calcium to determine the cause of tetany?






32. In a normal individual - injection of thyrotropin-releasing hormone (TRH) causes an increase in blood concentrations of this hormone






33. The greatest activities of serum AST and ALT are seen in...






34. Thiis serum protein fraction is most likely to be elevated in patients with nephrotic syndrome?






35. A low concentrarion of serum phosphorus is commonly found in...






36. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...






37. If a drug has a half-life of 7 hours - how many doses given at 7-hour intervals does it usually take to achieve a steady state or plateau level?






38. A patient with malabsorption receives 25 g of d-xylose orally; during the subsequent 5-hour period - the urine excretion of d-xylose is less than 3 g. This would indicate...






39. Bile acid concentrations are useful to assess...






40. In monitoring glomerular function - this test has the highest sensitivity






41. Lasting serum phosphate concentration is controlled primarily by the...






42. The osmolal gap is defined as measured Osm/kg minus the calculated Osm/kg. The average osmolal gap is near...






43. In using ion-exchange chromatographicbmethods - falsely increased levels of Hgb A1c will be demonstrated in presence of...






44. The Henderson-Hasselbalch equation






45. Phenobarbital is a metabolite of...






46. Total iron-binding capacity measures the serum iron transporting capacity of...






47. The nanometer is a measurement of...






48. The major fraction of organic iodine in the circulation is in the form of...






49. Enzymes used in the diagnosis of acute pancreatitis?






50. In thin layer chromatography - the Rf value for a compound is given by the...