Test your basic knowledge |

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 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...






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






3. Most chemical methods for determining total protein utilize this reaction?






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






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






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






7. Upon development of a thin layer chromatogram for the drug analysis - all drug spots (including the standards) had migrated with the solvent front. The most probable cause for this would be...






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






9. Phenobarbital is a metabolite of...






10. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...






11. Before unconjugated bilirubin can react with Ehrlich's diazo reagent - this must be added






12. The following data were obtained from a cellulose acetate protein electrophoresis scan: Albumin area 75 units Gamma globulin area 30 units Total area 180 units Total protein 6.5 g/dL The gamma globulin content in g/dL is...






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






14. Coulometry is used to measure...






15. This chemical determination may be of help in establishing the presence of seminal fluid






16. Gel filtration chromatography is used to separate...






17. While performing a serum lithium determination on a flame photometer with cesium as the internal standard - the technologist noticed that there was a flickering flame. The most probable cause of this problem is...






18. When separating serum proteins by cellulose acetate electrophoresis using veronal buffer at pH 8.6 - beta globulin migrates...






19. The formula for calculating the amount of moles of a chemical?






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






21. A patient is admitted to the emergency room in a state of metabolic alkalosis.This would be consistent with this diagnosis?






22. 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...






23. An acid cleaning solution for glassware consists of...






24. In the Jaffe reaction - creatine reacts with...






25. A person suspected of having metabolic alkalosis would have these laboratory findings






26. Four children are admitted with malaise - anorexia - and abdominal pain. Further evaluations reveal mild anemia - erythrocyte basophilic stippling - and profound pica habits. Poisoning by which heavy metal is most likely responsible?






27. The normal concentration of proteins in cerebrospinal fluid - relative to serum protein - is...






28. Unless blood gas measurements are made immediately after sampling - in vitro glycolysis of the blood causes a...






29. 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...






30. This wavelengths is within the ultraviolet rang.






31. A psychiatric patient was experiencing sever depression - but responded to treatment with amitriptyline with no apparent side effects. A blood sample was sent to the laboratory for therapeutic monitoring. Which drug level would be MOST reflective of






32. The identification of Bence Jones protein is best accomplished by...






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






34. The biologically most active - naturally occuring androgen is...






35. Blood samples were collected at the beginning of an exercise class and after 30 minutes of aerobic activity. This would be most consistent with the postexercise sample






36. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...






37. This lipid results would be expected to be falsely elevated on a serum specimen from a nonfasting patient






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






39. 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






40. When taken by a euthyroid individual - oral contraceptives containing estrogens will have this effects on the thyroid function studies






41. A cardiac glycoside that is used in the treatment of congenital heart failure and arrhythmias by increasing the force and velocity of myocardial contraction is...






42. The direction in which albumin migrates (ie - toward anode or cathode) during electrophoretic separation of serum proteins - at pH 8.6 - is determined by...






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






44. The ability of a procedure to measure only the component(s) it claims to measure is called...






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






46. 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...






47. A patient with type I insulin-dependent diabetes mellitus has the following results: Fasting blood glucose: 150 mg/dL (70-110 rng/dL) Hemoglobin A1c: 25% (6.0%-19.5%) Fructosamine: 3.0 mmol/L ( 2.0-5.3 mmol/L)






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






49. 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...






50. A patient with hemolytic anemia will...