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 for acid phosphatase determination is best prepared for room temperature storage by...






2. In competitive inhibition of an enzyme reaction the...






3. As part of a hyperlipidemia screening program - the following results were obtained on a 25 year old woman 6 hours after eating:Triglycerides = 260 mg/dLCholesterol = 120 mg/dL - This is the BEST interpretation of these results?






4. Enzymes used in the diagnosis of acute pancreatitis?






5. The methodology based on the amount of energy absorbed by a subtance as a function of its concentration and using a specific source of the same material as the substance analyzed is...






6. This method offers the greatest sensitivity for HBsAg testing






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






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






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






10. 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...






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






12. This is a glycolytic enzyme that catalyzes the cleavage of fructose-1 - 6-diphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate






13. About 90% of phenytoin is excreted in the urine as...






14. Serum levels that define hypoglycemia in preterm or low birth weight infants are...






15. Blood was collected in a serum separator tube from a patient who had been fasting since midnight. The time of collection was 7:00 AM. The laboratory test that should be re-collected is...






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






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






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






19. The presence of this isoenzymes indicates acute myocardial damage






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






21. Respiratory acidosis is described as a(n): ______ increase in CO2 decrease in pH






22. In a double-beam photometer - the additional beam is used to...






23. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...






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






25. The fast hemoglobin fraction is...






26. Cocaine is metabolized to...






27. In respiratory acidosis - a compensatory mechanism is the increase in...






28. The preparation of a patient for standard tolerance testing should include...






29. How many grams of sodium chloride are needed to prepare 1 L of 0.9% normal saline?






30. Stray light can be detected in a spectrophotometer by utilizing a...






31. Bromcresol purple at a pH of 5.2 is used in a colorimetric method to measure...






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






33. This 2-hour postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus






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






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






36. Kernicterus is an abnormal accumulation of bilirubin in...






37. The unit of measure for a standard solution is...






38. A 25-year-old man became nauseated and vomited 90 minutes after receiving a standard 75-g carbohydrate dose for an oral glucose tolerance test. The best course of action is...






39. The osmolality of a urine or serum specimen is measured by a change in the...






40. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...






41. Beriberi is associated with deficiency of...






42. Nephelometers measure light...






43. 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...






44. Clinical assays for tumor markers are the most important for...






45. The following five sodium control values (mEq/L) were obtained:140 - 135 - 138 - 140 - 142Calculate the coefficient of variation.






46. The chemical composition of HDL- cholesterol corresponds to...






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






48. 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?






49. 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...






50. A blood creatinine value of 5.0 mg/dL is most likely to be found with this blood value?