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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. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...






2. Cocaine is metabolized to...






3. Technical problems encountered during the collection of an amniotic fluid specimen caused doubt as to whether the specimen was amniotic in origin. This procedure would establish that the fluid is amniotic in origin






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






5. Upon completion of a run of cholesterol tests - the technician recognizes that the controls are not within the two standard deviations confidence range. What is the appropriate course of action?






6. The glucose level in normal peritoneal fluid should be...






7. The selectivity of an ion-selective electrode is determined by the...






8. 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






9. This method offers the greatest sensitivity for HBsAg testing






10. 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






11. 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...






12. The electrophoretic pattern of a plasma sample compared with a serum sample shows a...






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






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






15. 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...






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






17. The presence of this isoenzymes indicates acute myocardial damage






18. The method of choice for diagnosis of a protracted attack of porphyria is...






19. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...






20. Patients with Cushing's syndrome exhibit...






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






22. The ability of a procedure to measure only the component(s) it claims to measure is called...






23. A person suspected of having metabolic alkalosis would have these laboratory findings






24. A patient has signs and symptoms suggestive of acromegaly. The diagnosis would be confirmed if the patient had...






25. A patient with malabsorption receives 25 g of d-xylose orally; during the subsequent 5-hour period - the urine excretion of d-xylose is less than 3 g. This would indicate...






26. The major fraction of organic iodine in the circulation is in the form of...






27. A patient in her 33rd week of pregnancy is hospitalized with toxemia. Her doctor would like to deliver the baby early because the toxemia is becoming more severe. The baby's best chance of delivery without respiratory distress due to lung immaturity






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






29. Beriberi is associated with deficiency of...






30. This elevates carboxyhemoglobin?






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






32. A one MOLAL solution is equivalent to...






33. A patient with glomerulonephritis would present the following serum results...






34. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?






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






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






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






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






39. This would be an example of a glucose-specific colorimetric method






40. Serum and urine copper levels are assayed on a hospital patient with the following results: Patient Serum Cu: 58 ug/dL; Reference Value:70-140 ug/dL Patient Urine Cu: 83 ug/dL ; Reference Value: < 40 ug/dL This is most consistent with...


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






42. Quantitation of NA+ and K+ by ion-selective electrode is more rapid than flame photometry because...






43. The formula for calculating absorbance given the percent transmittance (%T) of a solution






44. About 90% of phenytoin is excreted in the urine as...






45. 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?






46. The nanometer is a measurement of...






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






48. 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






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






50. This applies to cryoscopic osmometry