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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. An emphysema patient suffering from fluid accumulation in the alveolar spaves is likely to be in what metabolic state?






2. Nephelometers measure light...






3. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






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






5. 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?






6. At a pH of 8.6 the gamma globulins move toward the cathode - despite the fact that they are negatively charged. What is this phenomenon called?






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






8. 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...






9. This elevates carboxyhemoglobin?






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






11. A new method is being evaluated. A recovery experiment is performed with the following results: 0.9 mL serum sample + 0.1 mL H20 = 89 mEq/L 0.9 mL serum sample + 0.1 mL analyte std. @ 800 mEq/L = 161 mEq/L The percent recovery of the added analyt






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






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






14. Ion selective electrodes are called selective rather than specific because they actually measure the...






15. A serum potassium is 19.5 mg/100 mL. This value is equal to how many mEq/L (MW of K = 39)?






16. This method offers the greatest sensitivity for HBsAg testing






17. This is a regulatory hormone.






18. The electrophoretic pattern of a plasma sample compared with a serum sample shows a...






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






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






21. Bile acid concentrations are useful to assess...






22. 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...






23. A common cause of respiratory alkalosis is...






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






25. In performing a spinal fluid protein determination - the specimen is diluted 1 part spinal fluid to 3 parts saline to obtain a result low enough to measure. To calculate the protein concentration the result must be...






26. A low concentrarion of serum phosphorus is commonly found in...






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






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






29. The formula for coefficient of variation?






30. The method of choice for diagnosis of a protracted attack of porphyria is...






31. 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...






32. The principle of the occult blood test depends on the...






33. A spectrophotometer is being considered for purchase by a small laboratory. This specification reflects the spectral purity of the instrument






34. Serum from a patient with metastatic carcinoma of the prostate was separated from the clot and stored at room temperature. The following results were obtained: Patient Reference Range Calcium: 10.8 mg/dL 8.8-10.3 mg/dL LD:420 U/L 50-150 U/L Acid phos






35. An electrophoretic separation of lactate dehydrogenase isoenzymes that demonstrates an elevation in LD-l and LD-2 in a "flipped" pattern is consistent with...






36. 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...






37. This condition does decrease activity of glucuronyl transferase result in increased unconjugated bilirubin and kernicterus in neonates






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






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






40. The Henderson-Hasselbalch equation






41. The anticonvulsant used to control tonic-clonic (grand mal) seizures is...






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






43. A patient with glomerulonephritis would present the following serum results...






44. The nanometer is a measurement of...






45. A 2-year-old child with a decreased serum T4 is described as being somewhat dwarfed - stocky - overweight - and having coarse features. Of the following - the most informative additional laboratory test would be the serum...






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






47. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...






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






49. A true statement about high performance liquid chromatography (HPLC) is that it...






50. 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...