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






2. The formula for calculating the amount of moles of a chemical?






3. Amino acid associated with a sulfhydryl group






4. Clinical assays for tumor markers are the most important for...






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






6. Which percentage of total serum calcium is nondiffusible protein bound?






7. Enzymes used in the diagnosis of acute pancreatitis?






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






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






10. 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...






11. 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...






12. The general types of interference in atomic absorption spectrophotometry...






13. This steroid is an adrenal cortical hormone






14. A fasting serum sample from an asymptomatic 43-year-old woman is examined visually chemically with the following results: Initial appearance of serum: Milky Appearance of serum after overnight refrigeration: Cream layer over turbid serum Triglyceri






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






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






17. A new method is being evaluated. A recovery experiment is performed with the following results: 0.9 mL serum sample + 0.1 mL H20 = 89 mEq/L 0.9 mL serum sample + 0.1 mL analyte std. @ 800 mEq/L = 161 mEq/L The percent recovery of the added analyt






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. 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. Acidosis and alkalosis are best defined as fluctuations in blood pH and CO2 content due to changes in...






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






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






23. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...






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






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






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






27. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






28. The most common type of congenital adrenal hyperplasia associated with increased plasma concentrations of 17 a-hydroxyprogesterone and increased urinary excretion of pregnanetriol is...






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






30. The nanometer is a measurement of...






31. Bioavailability of a drug refers to the...






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






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






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






35. Calcium concentration in the serum is regulated by...






36. Diagnostic specificity is defined as the percentage of individuals...






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






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






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






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






41. 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...






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






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






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






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






46. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing






47. The presence of this isoenzymes indicates acute myocardial damage






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






49. 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...






50. Regan isoenzyme has the same properties as alkaline phosphatase that originates in the...