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






2. Malic dehydrogenase is added to the aspartate aminotransaminase (AST) reaction to catalyze the conversion of...






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






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






5. A critically ill patient becomes comatose. The physician believes the coma is due to hepatic failure. The assay most helpful in this diagnosis is...






6. A chemiluminescent EIA...






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






8. This steroid is an adrenal cortical hormone






9. Isoenzyme assays are preformed to improve...






10. Enzymes used in the diagnosis of acute pancreatitis?






11. This method employs a highly specific antibody to thyroxine






12. Technical problems encountered during the collection of an amniotic fluid specimen caused doubt as to whether the specimen was amniotic in origin. This procedure would establish that the fluid is amniotic in origin






13. Patients with Cushing's syndrome exhibit...






14. The normal concentration of proteins in cerebrospinal fluid - relative to serum protein - is...






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






16. 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...






17. In respiratory acidosis - a compensatory mechanism is the increase in...






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






19. 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...






20. 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?






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






22. Phenobarbital is a metabolite of...






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






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






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






26. The most sensitive enzymatic indicator for liver damage from ethanol intake is...






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






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






29. 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?






30. 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?






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






32. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...






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






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






35. 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...






36. In developing the reference for a new EIA for CEA - the range for the normal population was broader than that published by the vendor. Controls are acceptable with a narrow coefficient of variation. This may be explained by...






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






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






39. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?






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






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






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






43. The presence of this isoenzymes indicates acute myocardial damage






44. This is a regulatory hormone.






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






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






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






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






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






50. 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...