Another theory is that the boxes placed in churches where parishioners deposited coins for the poor were opened and the contents distributed on December 26, which is also the Feast of St. Stephen. As time went by, Boxing Day gift giving expanded to include those who had rendered a service during the previous year.
For men, the normal range for ferritin is 24 to 336 nanograms per milliliter, and for women, the normal range for ferritin is 11 to 307 nanograms per milliliter, explains Mayo Clinic. These are measured in standard units. Continue Reading.
Ferritin is a measure of the iron stored in the ferritin protein within the bone marrow. It's my understanding that you can have a low iron and normal ferritin if the anemia is just starting and the serum level has dropped but not so much that the iron stores (ferritin) have been drawn down below normal.