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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. This method offers the greatest sensitivity for HBsAg testing






2. A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL and a 2-hour postprandial glucose concentration of 105 mg/dL. The statement that best describes this patient's fasting serum glucose concentration is...






3. An automated method for measuring chloride that generates silver ions in the reaction is...






4. A stool specimen that appears black and tarry should be tested for the presence of...






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






6. Maple syrup urine disease is characterized by an increase in this urinary amino acids






7. This steroid is an adrenal cortical hormone






8. 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...






9. Aminotransferase enzymes catalyze the...






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






11. 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?






12. 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...






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






14. The serum glucose concentration of a diabetic patient undergoing a 2-hour glucose tolerance test should return to the baseline (fasting level) after a minimum of...






15. 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?






16. 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?






17. This wavelengths is within the ultraviolet rang.






18. This method employs a highly specific antibody to thyroxine






19. A blood creatinine value of 5.0 mg/dL is most likely to be found with this blood value?






20. Beriberi is associated with deficiency of...






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






22. Ion selective electrodes are called selective rather than specific because they actually measure the...






23. Blood received in the laboratory for blood gas analysis must meet these requirements






24. 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






25. This applies to cryoscopic osmometry






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






27. The formula for coefficient of variation?






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






29. A chemiluminescent EIA...






30. Creatinine clearance is used to estimate the...






31. Four children are admitted with malaise - anorexia - and abdominal pain. Further evaluations reveal mild anemia - erythrocyte basophilic stippling - and profound pica habits. Poisoning by which heavy metal is most likely responsible?






32. 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...






33. In the sweat test - the sweating stimulant is introduced to the skin by application of...






34. In an internal standard flame photometer - the internal standard is used to...






35. Measurement of the serum acid phosphatase is used to detect neoplastic disease of the...






36. After a difficult venipuncture requiring prolonged application of the tourniquet - the serum K+ was found to be 6.8 mEq/L. The best course of action is to...






37. 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...






38. A patient has the following results: Patient Values : Reference Values: Serum iron 250 ug/dL 60-150 ug/dL TIBC 350 ug/dL 300-35O ug/dL The best conclusion is that this patient has...






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






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






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






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






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






44. 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?






45. If a drug has a half-life of 7 hours - how many doses given at 7-hour intervals does it usually take to achieve a steady state or plateau level?






46. 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...






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






48. Cerebrospinal fluid for glucose assay should be...






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






50. The principle of the occult blood test depends on the...