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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 reciprocal relationship exists between...






2. The most consistent analytical error involved in the routine determination of HDLcholesterol is caused by...






3. 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...






4. Currently the most common method for specific identification and quantitation of serum barbiturates is...






5. Assay of transketolase activity in blood is used to detect deficiency of...






6. The serum glucose concentration of a diabetic patient undergoing a 2-hour glucose tolerance test should return to the baseline (fasting level) after a minimum of...






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






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






9. TSH is produced by the...






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






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






12. A carbonate salt used to control manic-depressive disorders is...






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






14. A 21-year-old man with nausea - vomiting - and jaundice has the following laboratory findings: Total serum bilirubin level: 8.5 mg/dL (normal - 0-1.0) Conjugated serum bilirubin level: 6.1 mg/dL (normal - 0-0.5) Urine urobilinogen: Increased Fecal u






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. The formula for calculating absorbance given the percent transmittance (%T) of a solution






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






18. Hydrogen ion concentration (pH) in blood is usually determined by means of these electrodes?






19. Spectrophotometers isolate a narrow band pass by means of...






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






21. Certain enzymes are activated to metabolize drugs as a result of another drug action. This is referred to as...






22. The most widely used support medium for electrophoretic separation of lipoproteins is...






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






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






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






26. This method employs a highly specific antibody to thyroxine






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






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






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






30. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...






31. 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?






32. 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?






33. The following data were obtained on amniotic fluid from a gestation of 36 weeks' duration by menstrual dates: L/S = 2 Phosphatidyl glycerol not present This can be concluded from these data?






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






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






36. This elevates carboxyhemoglobin?






37. 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...






38. An automated method for measuring chloride that generates silver ions in the reaction is...






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






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






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






42. Following overnight fasting - hypoglycemia in adults is defined as a glucose of...






43. Quantitation of NA+ and K+ by ion-selective electrode is more rapid than flame photometry because...






44. 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...






45. Isoenzyme assays are preformed to improve...






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






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






48. Serum anion gap is increased in patients with...






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






50. 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...