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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 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...






2. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






3. A pH of 7.0 represents a H+ concentration of...






4. 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






5. Ninety percent of the copper present in plasma is bound to...






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






7. A fresh urine sample is received for "porphyrins" or "porphyria" without further information or specifications. Initial analysis should include...






8. In a double-beam photometer - the additional beam is used to...






9. 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...






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






11. This elevates carboxyhemoglobin?






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






13. 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?






14. The biuret reaction for the analysis of serum protein depends on the number...






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






16. Most automated blood gas analyzers directly measure...






17. 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...






18. An electrophoretic separation of lactate dehydrogenase isoenzymes that demonstrates an elevation in LD-l and LD-2 in a "flipped" pattern is consistent with...






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






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






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






22. The test for adrenal cortical hyperfunction that has the greatest diagnostic sensitivity is measurement of...






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






24. In the liver - bilirubin is converted to...






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






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






27. In the fasting state - the arterial and capillary blood glucose concentration varies from the venous glucose concentration by approximately how many mg/dL?






28. In using ion-exchange chromatographicbmethods - falsely increased levels of Hgb A1c will be demonstrated in presence of...






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






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






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






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






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






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






35. The reason carbon monoxide is so toxic is because it...






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






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






38. 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






39. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...






40. 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...






41. Hydrogen ion concentration (pH) in blood is usually determined by means of these electrodes?






42. Which two conditions can "physiologically" elevate serum alkaline phosphatase?






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






44. Lithium therapy is widely used in the treatment of...






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






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






47. Enzymes used in the diagnosis of acute pancreatitis?






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






49. TSH is produced by the...






50. Clinical assays for tumor markers are the most important for...







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