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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. Patients with Cushing's syndrome exhibit...






2. 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...






3. A serum sample for acid phosphatase determination is best prepared for room temperature storage by...






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






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






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






7. The fast hemoglobin fraction is...






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






9. This method offers the greatest sensitivity for HBsAg testing






10. 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...






11. A patient with hemolytic anemia will...






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






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






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






16. Gas chromatography with the nitrogen/phosphorus detector is the most commonly used technique for the analysis of...






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






18. The following bilirubin results are obtained on a patient: Day 1: 4.3 mg/dL Day 4: 2.2 mg/dL Day 2: 4.6 mg/dL Day 5: 4.4 mg/dL Day 3: 4.5 mg/dL Day 6: 4.5 mg/dL - Given that the controls were within range each day - what is a probable explanation for






19. The chemical composition of HDL- cholesterol corresponds to...






20. Which two conditions can "physiologically" elevate serum alkaline phosphatase?






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






22. A thick white turbid specimen was received in the laboratory labeled as pericardial fluid. A microscopic examination was performed - and the differential included 90% PMNs. The fluid is...






23. This is a regulatory hormone.






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






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






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






27. 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...






28. Aminotransferase enzymes catalyze the...






29. The reason carbon monoxide is so toxic is because it...






30. The Henderson-Hasselbalch equation






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






32. A patient with glomerulonephritis would present the following serum results...






33. The following data were obtained on amniotic fluid from a gestation of 36 weeks' duration by menstrual dates: L/S = 2 Phosphatidyl glycerol not present This can be concluded from these data?






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






35. 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...






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






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






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






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






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






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






42. 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?






43. Testing for the diagnosis of lead poisoning should include...






44. The anticonvulsant used to control tonic-clonic (grand mal) seizures is...






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






46. 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.






47. Blood received in the laboratory for blood gas analysis must meet these requirements






48. This calcium procedure utilizes lanthanum chloride to emliminate iterfering substances






49. Blood was collected in a serum separator tube from a patient who had been fasting since midnight. The time of collection was 7:00 AM. The laboratory test that should be re-collected is...






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