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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. TSH is produced by the...






2. When taken by a euthyroid individual - oral contraceptives containing estrogens will have this effects on the thyroid function studies






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






4. The different water content of erythrocytes and plasma makes true glucose concentrations in whole blood a function of the...






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






6. The biuret reaction for the analysis of serum protein depends on the number...






7. 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






8. Amino acid associated with a sulfhydryl group






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






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






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






12. An acid cleaning solution for glassware consists of...






13. In the liver - bilirubin is converted to...






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






15. Major actions of angiotensin II include...






16. The following five sodium control values (mEq/L) were obtained:140 - 135 - 138 - 140 - 142Calculate the coefficient of variation.






17. The TRH (thyrotropin-releasing hormone) stimulation test is useful in assessing...






18. This disease is associated with the greatest elevation of lactate dehydrogenase isoenzyme 1?






19. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...






20. The buffering capacity of blood is maintained by a reversible exchange process between bicarbonate and...






21. 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...






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






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






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






25. Serum anion gap is increased in patients with...






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






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






28. A patient is admitted to the emergency room in a state of metabolic alkalosis.This would be consistent with this diagnosis?






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






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






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






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






33. A psychiatric patient was experiencing sever depression - but responded to treatment with amitriptyline with no apparent side effects. A blood sample was sent to the laboratory for therapeutic monitoring. Which drug level would be MOST reflective of






34. 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...






35. 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?






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






37. This steroid is an adrenal cortical hormone






38. Thiis serum protein fraction is most likely to be elevated in patients with nephrotic syndrome?






39. A serum sample was assayed for bilirubin at 10 AM and the result was 12 mg/dL. The same sample was retested at 3 PM. The result now is 8 mg/dL. The most likely explanation for this discrepancy is...






40. Cerebrospinal fluid for glucose assay should be...






41. 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.






42. In familial hypercholesterolemia - the hallmark finding is an elevation of...






43. 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...






44. 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...






45. Serum and urine copper levels are assayed on a hospital patient with the following results: Patient Serum Cu: 58 ug/dL; Reference Value:70-140 ug/dL Patient Urine Cu: 83 ug/dL ; Reference Value: < 40 ug/dL This is most consistent with...

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46. Serum haptoglobin...






47. A breakdown product of hemoglobin is...






48. 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...






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






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