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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. In an internal standard flame photometer - the internal standard is used to...






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






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






4. 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...






5. This would be an example of a glucose-specific colorimetric method






6. Given the following values:100;120;150;140;130;What is the mean?






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






8. A 24-hour urine specimen (total volume = 1136 mL) is submitted to the laboratory for quantitative urine protein. Calculate the amount of protein excreted per day - if the total protein is 52 mg/dL.






9. The most widely employed screening technique for drug abuse is...






10. In electrophoresis of proteins - when the sample is placed in an electric field connected to a buffer of pH 8.6 - all of the proteins...






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






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






13. This elevates carboxyhemoglobin?






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






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






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






17. Beriberi is associated with deficiency of...






18. 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?






19. Blood specimens for digoxin assays should be obtained between 8 hours or more after drug administration because...






20. These enzymes of heme biosynthesis are inhibited by lead






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






22. In the fasting state - the arterial and capillary blood glucose concentration varies from the venous glucose concentration by approximately how many mg/dL?






23. Estrogen and progesterone receptor assays are useful in assessing prognosis in...?






24. 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...






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






26. A reciprocal relationship exists between...






27. 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...






28. The formation of estriol in a pregnant woman is dependent on...






29. Characteristic of the Bence Jones protein that is used to distinguish it from other urinary proteins is its solubility...






30. The buffer pH most effective at allowing amphoteric proteins to migrate toward the cathode in an electrophoretic system would be...






31. Specimens for blood gas determination should be drawn into a syringe containing...






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






33. The anion gap is useful for quality control of laboratory results for...






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






35. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...






36. The TRH (thyrotropin-releasing hormone) stimulation test is useful in assessing...






37. This wavelengths is within the ultraviolet rang.






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






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






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






41. In the atomic absorption method for calcium - lanthanum is used...






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






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






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






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






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






47. The biuret reaction for the analysis of serum protein depends on the number...






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






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






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