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






2. 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?






3. Pregnant women with symptoms of thirst - frequent urination - or unexplained weight loss should have this test performed?






4. A potassium level of 6.8 mEq/L is obtained. Before reporting the results - the first step the technologist should take is to...






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






6. A 21-year-old man with nausea - vomiting - and jaundice has the following laboratory findings: Total serum bilirubin level: 8.5 mg/dL (normal - 0-1.0) Conjugated serum bilirubin level: 6.1 mg/dL (normal - 0-0.5) Urine urobilinogen: Increased Fecal u






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






8. This is a characteristic shared by lactate dehydrogenase - malate dehydrogenase - isocitrate dehydrogenase - and hydroxybutyrate dehydrogenase?






9. A new method is being evaluated. A recovery experiment is performed with the following results: 0.9 mL serum sample + 0.1 mL H20 = 89 mEq/L 0.9 mL serum sample + 0.1 mL analyte std. @ 800 mEq/L = 161 mEq/L The percent recovery of the added analyt






10. A serum potassium is 19.5 mg/100 mL. This value is equal to how many mEq/L (MW of K = 39)?






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






12. Phenobarbital is a metabolite of...






13. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






14. The unit of measure for a standard solution is...






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






16. Spectrophotometers isolate a narrow band pass by means of...






17. The relative migration rate of proteins on cellulose acetate is based on...






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






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






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






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






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






23. The TRH (thyrotropin-releasing hormone) stimulation test is useful in assessing...






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






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






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






27. Serum levels that define hypoglycemia in preterm or low birth weight infants are...






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






29. Given the following results: Alkaline phosphatase Marked increase Aminotransferase Slight increase Aspartate aminotransferase Slight increase Alanine gamma-glutamyl transferase Marked increase This is most consistent with...






30. When separating serum proteins by cellulose acetate electrophoresis using veronal buffer at pH 8.6 - beta globulin migrates...






31. 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






32. 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?






33. This wavelengths is within the ultraviolet rang.






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






35. 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






36. This disease is associated with the greatest elevation of lactate dehydrogenase isoenzyme 1?






37. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...






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






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






40. 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...






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






42. Magnesium carbonate is added in an iron binding capacity determination in order to...






43. Acidosis and alkalosis are best defined as fluctuations in blood pH and CO2 content due to changes in...






44. This steroid is an adrenal cortical hormone






45. 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






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






47. A reciprocal relationship exists between...






48. 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?






49. The buffer pH most effective at allowing amphoteric proteins to migrate toward the cathode in an electrophoretic system would be...






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