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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 most consistent analytical error involved in the routine determination of HDLcholesterol is caused by...






2. 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?






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






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






5. Regan isoenzyme has the same properties as alkaline phosphatase that originates in the...






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






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






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






9. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...






10. This enzymes catalyzes the conversion of starch to glucose and maltose






11. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






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






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






14. A patient with hemolytic anemia will...






15. 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...






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






17. After a difficult venipuncture requiring prolonged application of the tourniquet - the serum K+ was found to be 6.8 mEq/L. The best course of action is to...






18. 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...






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






20. 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...






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






22. The enzyme present in almost all tissues that may be separated by electrophoresis into five components is...






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






24. What substance gives feces its normal color?






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






26. Alkaline phosphatase Slight increase - Aminotransferase Marked increase - Aspartate aminotransferase Marked increase - Alanine gamma-glutamyl transferase Slight increase






27. A spectrophotometer is being considered for purchase by a small laboratory. This specification reflects the spectral purity of the instrument






28. 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...






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






30. Clinical assays for tumor markers are the most important for...






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






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






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






34. In developing the reference for a new EIA for CEA - the range for the normal population was broader than that published by the vendor. Controls are acceptable with a narrow coefficient of variation. This may be explained by...






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






36. Most automated blood gas analyzers directly measure...






37. Analysis of erythrocytes for uroporphyrinogen I synthetase detects...






38. A patient is admitted with biliary cirrhosis. If a serum protein electrophoresis is preformed - these globulin fractions will be most elevated?






39. This chemical determination may be of help in establishing the presence of seminal fluid






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






41. When taken by a euthyroid individual - oral contraceptives containing estrogens will have this effects on the thyroid function studies






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






43. This steroid is an adrenal cortical hormone






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






45. The hemoglobin that is resistant to alkali (KOH) denaturation is...






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






47. The main reason for suboptimal drug levels in therapeutic drug monitoring is...






48. Stray light can be detected in a spectrophotometer by utilizing a...






49. In the Jaffe reaction - creatine reacts with...






50. 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