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. Blood samples were collected at the beginning of an exercise class and after 30 minutes of aerobic activity. This would be most consistent with the postexercise sample






2. 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...






3. Before unconjugated bilirubin can react with Ehrlich's diazo reagent - this must be added






4. A thick white turbid specimen was received in the laboratory labeled as pericardial fluid. A microscopic examination was performed - and the differential included 90% PMNs. The fluid is...






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






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






7. In thin layer chromatography - the Rf value for a compound is given by the...






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






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






10. Fluctuation of the needle on a coulometric type titrator is most probably due to...






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






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






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






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






15. 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






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






17. This is a regulatory hormone.






18. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing






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






20. An automated CK assay gives a reading that is above the limits of linearity. A dilution of the serum sample is made by adding 1 mL of serum to 9 mL of water. The instrument now rew 350 U/L. The correct report on the undiluted serum should be...






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






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






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






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






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






26. 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






27. In electrophoresis of serum proteins - arifacts at the application point are most frequently caused by...






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






29. A low concentrarion of serum phosphorus is commonly found in...






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






31. The normal concentration of proteins in cerebrospinal fluid - relative to serum protein - is...






32. A 24-hour urine specimen (total volume = 1136 mL) is submitted to the laboratory for quantitative urine protein. Calculate the amount of protein excreted per day - if the total protein is 52 mg/dL.






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. 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






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






36. A patient with hemolytic anemia will...






37. 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...






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






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






40. In spectrophotometric determination - this is the formula for calculating the absorbance of a solution






41. This 2-hour postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus






42. The primary function of serum albumin in the peripheral blood is to...






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






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






45. The stimulant that causes localized sweating for the sweat test is...






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






47. Cocaine is metabolized to...






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






49. Estrogen and progesterone receptor assays are useful in assessing prognosis in...?






50. This is a glycolytic enzyme that catalyzes the cleavage of fructose-1 - 6-diphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate