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






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






3. Stray light can be detected in a spectrophotometer by utilizing a...






4. Cocaine is metabolized to...






5. When the exact concentration of the solute of a solution is known and is used to evaluate the concentration of an unknown solution - the known solution is...






6. Following overnight fasting - hypoglycemia in adults is defined as a glucose of...






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






8. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in this disease






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






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






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. The measurement of light scattered by particles in the sample is the principle of...






13. 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






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






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






16. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...






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






18. The enzyme present in almost all tissues that may be separated by electrophoresis into five components is...






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






20. An emphysema patient suffering from fluid accumulation in the alveolar spaves is likely to be in what metabolic state?






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






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






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






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






25. Total iron-binding capacity measures the serum iron transporting capacity of...






26. This chemical determination may be of help in establishing the presence of seminal fluid






27. Amniotic fluid submitted for a lecithin/sphingomyelin (US) ratio has been left in a brown container since the night before. You would expect...






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






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






30. A chemiluminescent EIA...






31. A cardiac glycoside that is used in the treatment of congenital heart failure and arrhythmias by increasing the force and velocity of myocardial contraction is...






32. The main reason for suboptimal drug levels in therapeutic drug monitoring is...






33. 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?






34. 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...






35. Kernicterus is an abnormal accumulation of bilirubin in...






36. This hemoglobin has glucose-6-phosphate on the amino-terminal valine of the beta chain?






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






38. A true statement about high performance liquid chromatography (HPLC) is that it...






39. 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






40. 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...






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






42. 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...






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






44. The different water content of erythrocytes and plasma makes true glucose concentrations in whole blood a function of the...






45. 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...






46. A carbonate salt used to control manic-depressive disorders is...






47. 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?






48. A blood gas sample was sent to the lab on ice - and a bubble was present in the syringe. The blood had been exposed to room air for at least 30 minutes. The following change in blood gases occurred...






49. About 90% of phenytoin is excreted in the urine as...






50. In electrophoretic analysis - buffers...