Test your basic knowledge |

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 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?






2. A critically ill patient becomes comatose. The physician believes the coma is due to hepatic failure. The assay most helpful in this diagnosis is...






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






4. Enzymes used in the diagnosis of acute pancreatitis?






5. 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






6. A 25-year-old man became nauseated and vomited 90 minutes after receiving a standard 75-g carbohydrate dose for an oral glucose tolerance test. The best course of action is...






7. The most widely used support medium for electrophoretic separation of lipoproteins is...






8. This elevates carboxyhemoglobin?






9. An HPLC operator notes that the column pressure is too high - is rising too rapidly - and the recorder output is not producing normal peaks. The most probable cause of the problem is...






10. 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






11. A patient had the following serum results: Na+ 140 mEq/L K+ 4.0 mEq/L Glucose 95 mg/dL BUN 10 mg/dL Which osmolality is consistent with these results?






12. 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






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






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






15. 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






16. The regulation of calcium and phosphorus metabolism is accomplished by which gland?






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






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






19. A blood sample was received from the emergency room with a request for narcotic analysis. The request slip indicated that the patient (a known heroin addict) responded to naloxone administration. The serum was negative for morphine by EIA. What other






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






21. Nephelometers measure light...






22. The anion gap is useful for quality control of laboratory results for...






23. An increase in serum acetone is indicative of a defect in the metabolism of...






24. This enzyme substrates for prostatic acid phosphatase determination results in the highest specificity






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






26. 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...






27. A course of instruction is being planned to teach laboratory employees to correct simple malfunctions in selected laboratory instruments. In writing the objectives for this course - this would be most appropriate?






28. 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...






29. A patient with malabsorption receives 25 g of d-xylose orally; during the subsequent 5-hour period - the urine excretion of d-xylose is less than 3 g. This would indicate...






30. Scurvy is associated with deficiency of...






31. TSH is produced by the...






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






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






34. The greatest activities of serum AST and ALT are seen in...






35. The concentration of serum carotene is affected MOST by...






36. Gel filtration chromatography is used to separate...






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






38. 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...






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






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






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






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






43. The preparation of a patient for standard tolerance testing should include...






44. Detection of carriers of hereditary coproporphyria should include analysis of...






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






46. 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...






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






48. In respiratory acidosis - a compensatory mechanism is the increase in...






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






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