Serum iron in other molecules in cells throughout the body. None of this iron is directly accessible by testing the serum. However, some iron is circulating in the serum. Transferrin is a molecule produced by the liver that binds one or two iron(III) ions, i.e. ferric iron, Fe; transferrin is essential if stored iron is to be moved and used. Most of the time, about 30% of the available sites on the transferrin molecule are filled. The test for serum iron uses blood drawn from veins to measure the iron molecules that are bound to transferrin, and circulating in the blood. The
Super Hits (Blood, Sweat & Tears album) Ultimately, this collection isn't as detailed as Blood, Sweat & Tears Greatest Hits, but it's still a good bargain for the budget-conscious." Super Hits (Blood, Sweat & Tears album) Super Hits is a budget compilation album by the band Blood, Sweat & Tears released by Columbia Records in 1998. This ten song collection draws four songs from each of the band's first two albums "Child Is Father to the Man" and "Blood, Sweat & Tears". Writing for Allmusic, critic Al Campbell wrote, "Super Hits samples ten tracks recorded by Blood, Sweat & Tears for Columbia Records in the late '60s