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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. Calcium concentration in the serum is regulated by...






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






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






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






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






7. The greatest activities of serum AST and ALT are seen in...






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






9. Cocaine is metabolized to...






10. Turbidity in serum suggests elevation of...






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






12. A chemiluminescent EIA...






13. One means of checking a spectrophotometer wavelength calibration in the visible range is by using a...






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






15. The general types of interference in atomic absorption spectrophotometry...






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






17. Following overnight fasting - hypoglycemia in adults is defined as a glucose of...






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






19. 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






20. A patient with type I insulin-dependent diabetes mellitus has the following results: Fasting blood glucose: 150 mg/dL (70-110 rng/dL) Hemoglobin A1c: 25% (6.0%-19.5%) Fructosamine: 3.0 mmol/L ( 2.0-5.3 mmol/L)






21. This lipid results would be expected to be falsely elevated on a serum specimen from a nonfasting patient






22. 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?






23. Measurement of total T4 by competitive protein binding or displacement is based on the specific binding properties of...






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






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






26. Bromcresol purple at a pH of 5.2 is used in a colorimetric method to measure...






27. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






28. The urea nitrogen concentration of a serum sample was measured as 15 mg/dL (atomic weights: carbon = 12 - oxygen = 16 - nitrogen = 14 - hydrogen = 1). The urea concentration of the same sample - in mg/dL - is...






29. 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...






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






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






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






33. If the correlation coefficient (r) of two variables is zero...






34. Bile acid concentrations are useful to assess...






35. This elevates carboxyhemoglobin?






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






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






38. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...






39. 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?






40. The fast hemoglobin fraction is...






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






42. High levels of which lipoprotein class are associated with decreased risk of accelerated atherosclerosis?






43. In an internal standard flame photometer - the internal standard is used to...






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






45. Serum anion gap is increased in patients with...






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






47. The principle of the occult blood test depends on the...






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






49. Lasting serum phosphate concentration is controlled primarily by the...






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