TLS Online TPP Program

#Question id: 10962


A 24-year-old man came into the ER with a broken leg. A blood test was ordered and his WBC count was 22 × 10^3/μl. Five hours later, a second blood test resulted in values of 7 × 10^3/μl. What is the cause of the increased WBC count with the first test?

#I Life Science/ Life Sciences Group – I-V
  1. Increased production of WBC by the bone marrow
  2. Shift of WBCs from the marginated pool to the circulating pool
  3. Decreased destruction of WBCs
  4. Increased production of selectins