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






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






3. The following blood gas results were obtained: pH : 7.18 PO2: 86 mm Hg PCO2: 60 mm Hg O2 saturation: 92% HCO3-: 21 mEq/L TCO2: 23 mEq/L Base excess: -8.0 mEq/L The patient's results are compatible with...






4. Analysis of erythrocytes for uroporphyrinogen I synthetase detects...






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






6. The ability of a procedure to measure only the component(s) it claims to measure is called...






7. An electrode has a silver/silver chloride anode and a platinum wire cathode. It is suspended in KCl solution and separated from the blood to be analyzed by a selectively permeable membrane. Such an electrode is used to measure...






8. Most chemical methods for determining total protein utilize this reaction?






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






10. A technician is asked by the supervisor to prepare a standard solution from the stock standard. What is the glassware of choice for this solution?






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






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






13. A chemiluminescent EIA...






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






15. This method employs a highly specific antibody to thyroxine






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






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






18. A patient with type I insulin-dependent diabetes mellitus has the following results: Fasting blood glucose: 150 mg/dL (70-110 rng/dL) Hemoglobin A1c: 25% (6.0%-19.5%) Fructosamine: 3.0 mmol/L ( 2.0-5.3 mmol/L)






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






20. Ninety percent of the copper present in plasma is bound to...






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






22. The identification of Bence Jones protein is best accomplished by...






23. A patient is admitted with biliary cirrhosis. If a serum protein electrophoresis is preformed - these globulin fractions will be most elevated?






24. In performing a spinal fluid protein determination - the specimen is diluted 1 part spinal fluid to 3 parts saline to obtain a result low enough to measure. To calculate the protein concentration the result must be...






25. As part of a hyperlipidemia screening program - the following results were obtained on a 25 year old woman 6 hours after eating:Triglycerides = 260 mg/dLCholesterol = 120 mg/dL - This is the BEST interpretation of these results?






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






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






28. 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...






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






30. Major actions of angiotensin II include...






31. An automated CK assay gives a reading that is above the limits of linearity. A dilution of the serum sample is made by adding 1 mL of serum to 9 mL of water. The instrument now rew 350 U/L. The correct report on the undiluted serum should be...






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






33. 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?






34. 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...






35. 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






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






37. Quantitation of NA+ and K+ by ion-selective electrode is more rapid than flame photometry because...






38. The major fraction of organic iodine in the circulation is in the form of...






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






40. 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






41. The following results were obtained in a creatinine clearance evaluation: Urine concentration 84 mg/dL Urine volume 1440 mL/24 hr Serum concentration 1.4 mg/dL Body surface area 1.60 m2 (average = 1.73 m2) The creatinine cle~trance in mL/min is...






42. 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...






43. A patient with hemolytic anemia will...






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






45. The test for adrenal cortical hyperfunction that has the greatest diagnostic sensitivity is measurement of...






46. In electrophoretic analysis - buffers...






47. A person suspected of having metabolic alkalosis would have these laboratory findings






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






49. This method offers the greatest sensitivity for HBsAg testing






50. In using ion-exchange chromatographicbmethods - falsely increased levels of Hgb A1c will be demonstrated in presence of...