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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 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...






2. 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...






3. Scurvy is associated with deficiency of...






4. A course of instruction is being planned to teach laboratory employees to correct simple malfunctions in selected laboratory instruments. In writing the objectives for this course - this would be most appropriate?






5. Phenobarbital is a metabolite of...






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






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






8. 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...






9. Ninety percent of the copper present in plasma is bound to...






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






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






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






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






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






15. The enzyme that exists chiefly in skeletal muscle - heart - and brain; is grossly elevated in active muscular dystrophy; and rises early in myocardial infarction is...






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






17. 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...






18. The selectivity of an ion-selective electrode is determined by the...






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






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






21. This steroid is an adrenal cortical hormone






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






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






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






25. Pregnant women with symptoms of thirst - frequent urination - or unexplained weight loss should have this test performed?






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






27. A patient is admitted with biliary cirrhosis. If a serum protein electrophoresis is preformed - these globulin fractions will be most elevated?






28. A sweat chloride result of 55 mEq/L and a sweat sodium of 52 mEq/L were obtained ona patient who has a history of respiratory problems. The bestc interpretation of these results is...






29. Which blood gas electrode is composed of calomel and glass?






30. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing






31. In the assay of lactate dehydrogenase - this product is actually measured






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






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






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






35. Most automated blood gas analyzers directly measure...






36. The urea nitrogen concentration of a serum sample was measured as 15 mg/dL (atomic weights: carbon = 12 - oxygen = 16 - nitrogen = 14 - hydrogen = 1). The urea concentration of the same sample - in mg/dL - is...






37. The Porter-Silber method (phenylhydrazine in alcohol and sulfuric acid) involves which part of the steroid molecule?






38. 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)






39. An HPLC operator notes that the column pressure is too high - is rising too rapidly - and the recorder output is not producing normal peaks. The most probable cause of the problem is...






40. The following laboratory results were obtained: Serum Calcium: Increased - Urine Calcium: Increased - Serum Phosphate: Decreased - Urine Phosphate: Increased Serum Alkaline Phosphatase: Normal or Increased These results are most compatible with...






41. 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...






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






43. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...






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






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






46. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...






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






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






49. This applies to cryoscopic osmometry






50. Regan isoenzyme has the same properties as alkaline phosphatase that originates in the...







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