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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. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?






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






3. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...






4. Amino acid associated with a sulfhydryl group






5. High levels of which lipoprotein class are associated with decreased risk of accelerated atherosclerosis?






6. 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...






7. Which percentage of total serum calcium is nondiffusible protein bound?






8. An Rf value of 0.5 in thin-layer chromatography means...






9. This hemoglobin has glucose-6-phosphate on the amino-terminal valine of the beta chain?






10. The most sensitive enzymatic indicator for liver damage from ethanol intake is...






11. The primary function of serum albumin in the peripheral blood is to...






12. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...






13. The main reason for suboptimal drug levels in therapeutic drug monitoring is...






14. The formula for coefficient of variation?






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






16. The following blood gas results were obtained: pH : 7.18 PO2: 86 mm Hg PCO2: 60 mm Hg O2 saturation: 92% HCO3-: 21 mEq/L TCO2: 23 mEq/L Base excess: -8.0 mEq/L The patient's results are compatible with...






17. A serum sample was assayed for bilirubin at 10 AM and the result was 12 mg/dL. The same sample was retested at 3 PM. The result now is 8 mg/dL. The most likely explanation for this discrepancy is...






18. The most important buffer pair in plasma is the...






19. The test for adrenal cortical hyperfunction that has the greatest diagnostic sensitivity is measurement of...






20. Diagnostic specificity is defined as the percentage of individuals...






21. A technician is asked by the supervisor to prepare a standard solution from the stock standard. What is the glassware of choice for this solution?






22. Most automated blood gas analyzers directly measure...






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






24. This enzyme substrates for prostatic acid phosphatase determination results in the highest specificity






25. To ensure an accurate ammonia level result - the specimen should be...






26. A blood gas sample was sent to the lab on ice - and a bubble was present in the syringe. The blood had been exposed to room air for at least 30 minutes. The following change in blood gases occurred...






27. What specimen preparation is commonly used to perform the alkaline phosphatase isoenzyme determination?






28. A blood sample was received from the emergency room with a request for narcotic analysis. The request slip indicated that the patient (a known heroin addict) responded to naloxone administration. The serum was negative for morphine by EIA. What other






29. After a difficult venipuncture requiring prolonged application of the tourniquet - the serum K+ was found to be 6.8 mEq/L. The best course of action is to...






30. A one MOLAL solution is equivalent to...






31. This electrolyte is the chief plasma cation whose main function is maintaining osmotic pressure






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






33. An increase in serum acetone is indicative of a defect in the metabolism of...






34. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?






35. A pH of 7.0 represents a H+ concentration of...






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






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






38. A thick white turbid specimen was received in the laboratory labeled as pericardial fluid. A microscopic examination was performed - and the differential included 90% PMNs. The fluid is...






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






40. This is a regulatory hormone.






41. In spectrophotometric determination - this is the formula for calculating the absorbance of a solution






42. A reciprocal relationship exists between...






43. The T3 resin uptake test is a measure of...






44. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?






45. A patient with hemolytic anemia will...






46. Upon completion of a run of cholesterol tests - the technician recognizes that the controls are not within the two standard deviations confidence range. What is the appropriate course of action?






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






48. The most heat labile fraction of alkaline phosphatase is obtained from...






49. In the assay of lactate dehydrogenase - this product is actually measured






50. A potentiometric electrode that measures an analyte that passes through a selectively premeable membrane and rapidly enters into an equilibrium with an electrolyte solution is...







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