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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. 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...






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. 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...






4. 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...






5. A breakdown product of hemoglobin is...






6. The following data were obtained on amniotic fluid from a gestation of 36 weeks' duration by menstrual dates: L/S = 2 Phosphatidyl glycerol not present This can be concluded from these data?






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






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






9. In a normal individual - injection of thyrotropin-releasing hormone (TRH) causes an increase in blood concentrations of this hormone






10. Specimens for blood gas determination should be drawn into a syringe containing...






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






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






13. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...






14. A patient with myeloproliferative disorder has the following values: Hgb = 13 g/dL Hct = 38% WBC = 30 x 10^3/uL Platelets = 1000 x 10^3/uL Serum Na+ = 140 mEq/L Serum K+ = 7 mEq/L The serum K+ should be confirmed by...






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






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






17. 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...






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






19. The most heat labile fraction of alkaline phosphatase is obtained from...






20. This method employs a highly specific antibody to thyroxine






21. Characteristic of the Bence Jones protein that is used to distinguish it from other urinary proteins is its solubility...






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






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






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






25. 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...






26. 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






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






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






29. 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






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






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






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






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






34. A 68-year-old man arrives in the emergency room with a glucose level of 722 mg/dL and serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to indicate...






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






36. Measurement of total T4 by competitive protein binding or displacement is based on the specific binding properties of...






37. TSH is produced by the...






38. 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...






39. The expected blood gas results for a patient in chronic renal failure would match the pattern of...






40. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...






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






42. The anticonvulsant used to control tonic-clonic (grand mal) seizures is...






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






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






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






46. High levels of which lipoprotein class are associated with decreased risk of accelerated atherosclerosis?






47. One means of checking a spectrophotometer wavelength calibration in the visible range is by using a...






48. 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?






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






50. A sweat chloride result of 55 mEq/L and a sweat sodium of 52 mEq/L were obtained ona patient who has a history of respiratory problems. The bestc interpretation of these results is...







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