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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. 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...






2. In using ion-exchange chromatographicbmethods - falsely increased levels of Hgb A1c will be demonstrated in presence of...






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






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






5. 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...






6. The protein portion of an enzyme complex is called the...






7. Enzymes used in the diagnosis of acute pancreatitis?






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






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






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






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






12. This enzymes catalyzes the conversion of starch to glucose and maltose






13. The enzyme present in almost all tissues that may be separated by electrophoresis into five components is...






14. Measurement of total T4 by competitive protein binding or displacement is based on the specific binding properties of...






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






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






17. 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






18. In spectrophotometric determination - this is the formula for calculating the absorbance of a solution






19. Given the following results: Alkaline phosphatase Marked increase Aminotransferase Slight increase Aspartate aminotransferase Slight increase Alanine gamma-glutamyl transferase Marked increase This is most consistent with...






20. Amniotic fluid submitted for a lecithin/sphingomyelin (US) ratio has been left in a brown container since the night before. You would expect...






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






22. In the sweat test - the sweating stimulant is introduced to the skin by application of...






23. 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...






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






25. Respiratory acidosis is described as a(n): ______ increase in CO2 decrease in pH






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






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






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






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






30. 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...






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






33. If a drug has a half-life of 7 hours - how many doses given at 7-hour intervals does it usually take to achieve a steady state or plateau level?






34. 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?






35. 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






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






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






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






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






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






41. What specimen preparation is commonly used to perform the alkaline phosphatase isoenzyme determination?






42. The expected blood gas results for a patient in chronic renal failure would match the pattern of...






43. 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...






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






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






46. This method employs a highly specific antibody to thyroxine






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






48. The stimulant that causes localized sweating for the sweat test is...






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






50. 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?







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