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






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






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






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






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






6. Total iron-binding capacity measures the serum iron transporting capacity of...






7. 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...






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






9. In the atomic absorption method for calcium - lanthanum is used...






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






11. Respiratory acidosis is described as a(n): ______ increase in CO2 decrease in pH






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






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






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






15. 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...






16. The presence of this isoenzymes indicates acute myocardial damage






17. 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...






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






19. Coulometry is used to measure...






20. In the immunoinhibition phase of the CK-MB procedure...






21. 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?






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






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






24. The formula for calculating the amount of moles of a chemical?






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






26. An emphysema patient suffering from fluid accumulation in the alveolar spaves is likely to be in what metabolic state?






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






28. Serum concentrations of vitamin B12 are elevated in...






29. Major actions of angiotensin II include...






30. The fast hemoglobin fraction is...






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






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






33. 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...






34. In performing a spinal fluid protein determination - the specimen is diluted 1 part spinal fluid to 3 parts saline to obtain a result low enough to measure. To calculate the protein concentration the result must be...






35. 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






36. Malic dehydrogenase is added to the aspartate aminotransaminase (AST) reaction to catalyze the conversion of...






37. The following laboratory results were obtained: Serum Calcium: Increased - Urine Calcium: Increased - Serum Phosphate: Decreased - Urine Phosphate: Increased Serum Alkaline Phosphatase: Normal or Increased These results are most compatible with...






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






39. To ensure an accurate ammonia level result - the specimen should be...






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






42. The following five sodium control values (mEq/L) were obtained:140 - 135 - 138 - 140 - 142Calculate the coefficient of variation.






43. 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...






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






45. Which blood gas electrode is composed of calomel and glass?






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






47. Currently the most common method for specific identification and quantitation of serum barbiturates is...






48. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






49. The following laboratory results were obtained on arterial blood: Sodium 136 mEq/L pH 7.32 Potassium 4.4 mEq/L PCO2 79 mm Hg Chloride 92 mEq/L Bicarbonate 40 mEq/L These results are most compatible with...






50. The most widely used support medium for electrophoretic separation of lipoproteins is...