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






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






3. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...






4. 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...






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






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






7. In monitoring glomerular function - this test has the highest sensitivity






8. 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?






9. A patient with myeloproliferative disorder has the following values: Hgb = 13 g/dL Hct = 38% WBC = 30 x 10^3/uL Platelets = 1000 x 10^3/uL Serum Na+ = 140 mEq/L Serum K+ = 7 mEq/L The serum K+ should be confirmed by...






10. This lipid results would be expected to be falsely elevated on a serum specimen from a nonfasting patient






11. This steroid is an adrenal cortical hormone






12. A 24-hour urine specimen (total volume = 1136 mL) is submitted to the laboratory for quantitative urine protein. Calculate the amount of protein excreted per day - if the total protein is 52 mg/dL.






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






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






15. The following laboratory results were obtained on arterial blood: Sodium 136 mEq/L pH 7.32 Potassium 4.4 mEq/L PCO2 79 mm Hg Chloride 92 mEq/L Bicarbonate 40 mEq/L These results are most compatible with...






16. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...






17. In an internal standard flame photometer - the internal standard is used to...






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






19. This 2-hour postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus






20. The most consistent analytical error involved in the routine determination of HDLcholesterol is caused by...






21. A condition in which erythrocyte protoporphyrin is increased is...






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






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






24. The formula for coefficient of variation?






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






26. When myocardial infarction occurs - the first enzyme to become elevated is...






27. An Rf value of 0.5 in thin-layer chromatography means...






28. Major actions of angiotensin II include...






29. 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...






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






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






32. The most widely employed screening technique for drug abuse is...






33. TSH is produced by the...






34. 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...






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






36. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...






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






38. An automated method for measuring chloride that generates silver ions in the reaction is...






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






40. The most specific enzyme test for acute pancreatitis is...






41. A 21-year-old man with nausea - vomiting - and jaundice has the following laboratory findings: Total serum bilirubin level: 8.5 mg/dL (normal - 0-1.0) Conjugated serum bilirubin level: 6.1 mg/dL (normal - 0-0.5) Urine urobilinogen: Increased Fecal u






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






43. A patient has signs and symptoms suggestive of acromegaly. The diagnosis would be confirmed if the patient had...






44. A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL and a 2-hour postprandial glucose concentration of 105 mg/dL. The statement that best describes this patient's fasting serum glucose concentration is...






45. 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...






46. The anion gap is useful for quality control of laboratory results for...






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






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






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






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