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






2. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...






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






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






5. Major actions of angiotensin II include...






6. The methodology based on the amount of energy absorbed by a subtance as a function of its concentration and using a specific source of the same material as the substance analyzed is...






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






8. 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)






9. Cocaine is metabolized to...






10. A patient in her 33rd week of pregnancy is hospitalized with toxemia. Her doctor would like to deliver the baby early because the toxemia is becoming more severe. The baby's best chance of delivery without respiratory distress due to lung immaturity






11. 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...






12. 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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13. Given the following values:100;120;150;140;130;What is the mean?






14. 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...






15. This is a glycolytic enzyme that catalyzes the cleavage of fructose-1 - 6-diphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate






16. Sixty to seventy-five percent of the plasma cholesterol is transported by...






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






18. 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...






19. Beriberi is associated with deficiency of...






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






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






22. In the assay of lactate dehydrogenase - this product is actually measured






23. 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






24. Blood samples were collected at the beginning of an exercise class and after 30 minutes of aerobic activity. This would be most consistent with the postexercise sample






25. The first step to be taken when attempting to repair a piece of electronic equipment is...






26. How many grams of sodium chloride are needed to prepare 1 L of 0.9% normal saline?






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






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






29. 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?






30. Serum from a patient with metastatic carcinoma of the prostate was separated from the clot and stored at room temperature. The following results were obtained: Patient Reference Range Calcium: 10.8 mg/dL 8.8-10.3 mg/dL LD:420 U/L 50-150 U/L Acid phos






31. In the Jaffe reaction - creatine reacts with...






32. Phenobarbital is a metabolite of...






33. This electrolyte is the chief plasma cation whose main function is maintaining osmotic pressure






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






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






36. In electrophoresis of proteins - when the sample is placed in an electric field connected to a buffer of pH 8.6 - all of the proteins...






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






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






39. The first step in analyzing a 24-hour urine specimen for quantitative urine protein is...






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






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






43. Isoenzyme assays are preformed to improve...






44. A 9-month-old boy from Israel has gradually lost the ability to sit up and develops seizures. He has an increased amount of a phospholipid called GM2-ganglioside in his neurons - and he lacks the enzyme hexosaminidase A in his leukocytes. These findi






45. Which blood gas electrode is composed of calomel and glass?






46. A potassium level of 6.8 mEq/L is obtained. Before reporting the results - the first step the technologist should take is to...






47. Most most likely to be ordered in addition to serum calcium to determine the cause of tetany?






48. Malic dehydrogenase is added to the aspartate aminotransaminase (AST) reaction to catalyze the conversion of...






49. 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...






50. On immunoassays using enzyme-labeled antibodies or antigens: ___________ can be carried out with a spectrophotometer