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






2. The hemoglobin that is resistant to alkali (KOH) denaturation is...






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






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






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






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






7. The first step in analyzing a 24-hour urine specimen for quantitative urine protein is...






8. A blood gas sample was sent to the lab on ice - and a bubble was present in the syringe. The blood had been exposed to room air for at least 30 minutes. The following change in blood gases occurred...






9. A blood sample was received from the emergency room with a request for narcotic analysis. The request slip indicated that the patient (a known heroin addict) responded to naloxone administration. The serum was negative for morphine by EIA. What other






10. 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...






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






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






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






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






15. In the immunoinhibition phase of the CK-MB procedure...






16. A chemiluminescent EIA...






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






18. In thin layer chromatography - the Rf value for a compound is given by the...






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






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






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






22. Cocaine is metabolized to...






23. This applies to cryoscopic osmometry






24. A reciprocal relationship exists between...






25. 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?






26. Upon development of a thin layer chromatogram for the drug analysis - all drug spots (including the standards) had migrated with the solvent front. The most probable cause for this would be...






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






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






29. Serum concentrations of vitamin B12 are elevated in...






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






31. Sixty to seventy-five percent of the plasma cholesterol is transported by...






32. Beriberi is associated with deficiency of...






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






34. A 68-year-old man arrives in the emergency room with a glucose level of 722 mg/dL and serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to indicate...






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






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






37. 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...






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






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






40. Aminotransferase enzymes catalyze the...






41. TSH is produced by the...






42. A patient has the following results: Patient Values : Reference Values: Serum iron 250 ug/dL 60-150 ug/dL TIBC 350 ug/dL 300-35O ug/dL The best conclusion is that this patient has...






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






44. The following data were obtained from a cellulose acetate protein electrophoresis scan: Albumin area 75 units Gamma globulin area 30 units Total area 180 units Total protein 6.5 g/dL The gamma globulin content in g/dL is...






45. 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...






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






47. Calcium concentration in the serum is regulated by...






48. The measurement of light scattered by particles in the sample is the principle of...






49. This diseases results from a familial absence of high-density lioprotein






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