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






2. A blood creatinine value of 5.0 mg/dL is most likely to be found with this blood value?






3. A patient with myeloproliferative disorder has the following values: Hgb = 13 g/dL Hct = 38% WBC = 30 x 10^3/uL Platelets = 1000 x 10^3/uL Serum Na+ = 140 mEq/L Serum K+ = 7 mEq/L The serum K+ should be confirmed by...






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






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






6. Blood specimens for digoxin assays should be obtained between 8 hours or more after drug administration because...






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






8. 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...






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






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






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






12. The Henderson-Hasselbalch equation






13. 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






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






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






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






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






18. The nanometer is a measurement of...






19. 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






20. The formula for coefficient of variation?






21. Bioavailability of a drug refers to the...






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






23. The methodology based on the amount of energy absorbed by a subtance as a function of its concentration and using a specific source of the same material as the substance analyzed is...






24. Isoenzyme assays are preformed to improve...






25. A serum sample was assayed for bilirubin at 10 AM and the result was 12 mg/dL. The same sample was retested at 3 PM. The result now is 8 mg/dL. The most likely explanation for this discrepancy is...






26. The direction in which albumin migrates (ie - toward anode or cathode) during electrophoretic separation of serum proteins - at pH 8.6 - is determined by...






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






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






29. 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






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






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






32. 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...






33. Most chemical methods for determining total protein utilize this reaction?






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






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






36. On immunoassays using enzyme-labeled antibodies or antigens: ___________ can be carried out with a spectrophotometer






37. When the exact concentration of the solute of a solution is known and is used to evaluate the concentration of an unknown solution - the known solution is...






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






39. Unless blood gas measurements are made immediately after sampling - in vitro glycolysis of the blood causes a...






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






41. A 2-year-old child with a decreased serum T4 is described as being somewhat dwarfed - stocky - overweight - and having coarse features. Of the following - the most informative additional laboratory test would be the serum...






42. 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...






43. 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...






44. 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...






45. A 68-year-old man arrives in the emergency room with a glucose level of 722 mg/dL and serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to indicate...






46. 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...






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






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






49. A technician is asked by the supervisor to prepare a standard solution from the stock standard. What is the glassware of choice for this solution?






50. 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)