Question

4. A clotted blood specimen is removed from the centrifuge and the serum is found to have a slight pinkish color instead of the usual pale yellow color. Which of these laboratory results can be falsely increased in this type of circumstance? Select one a. glucose b. calcium c. sodium d. potassium 5. A premature baby has the following gentamicin results. What should be the next step. given these results, which have been verified for identification and analytical validity based on quality control and system monitoring? Peak 8 ug/mL (3-5) Trough 5 ug/mL (<2) Select one: a. Report the result as critical and call to the attention of the patient's nurse. b. Release the report and call the patient's parents or guardians. c. Check with the phlebotomist that the patient was in the pediatric intensive care unit. d. Check with the microbiology section to see if the patient's organism(s) are resistant 6. Amniotic fluid following the first 2 or 3 mL discard is collected in a sterile plastic syringe and placed in a clear conical centrifuge tube. Amniotic fluid is transported in ice for delivery to the laboratory and refrigerated prior to testing. The specimen will be centrifuged or filtered before analysis. Which of these instructions would NOT be favorable for testing amniotic fluid bilirubin? Select one: a. The first 2-3 mL should be tested for bilirubin. b. An amber centrifuge tube should be used. c. The specimen should be retained at room temperature. d. The specimen should not be centrifuged. 7. An amniotic fluid bilirubin analysis resulted in an optical density of 0.22 units and zone interpretation of zone 3 from the Liley chart. This indicates a(an): Select one: a. Increasing level of bilirubin due to fetal liver disease. b. decreasing hemoglobin due to hemolytic disease of the fetus. C. decreased level of lecithin indicating fetal lung immaturity. d. open neural tube disease. 8. An analytical error is evident based on quality control results that show a gradual upward change in one direction from the mean. This is defined as a: Select one: a. random error b. shift c. trend. d. 135 violation

Answer 1

6) the first 2-3 ml should be tested for bilirubin.

7)decreased haemoglobin due to hemolytic disease of the foetus

8) trend