Garvican, Laura A.Lobigs, LouisaTelford, RichardFallon, KieranGore, Christopher2015-12-101555-0265http://hdl.handle.net/1885/69400Haemoglobin mass in a female endurance athlete was measured via carbon monoxide rebreathing upon diagnosis of iron-deficiency anemia (haemoglobin concentration = 8.8 g/dL, ferritin = 9.9 ng/mL) and regularly during treatment thereafter. Haemoglobin mass increased by 49% in the 2 wk following an intramuscular iron injection and continued to increase with oral iron supplementation for 15 wk. The presented case illustrates that haemoglobin mass is readily responsive to iron supplementation in a severely iron-deficient anemic athlete and that changes can be tracked efficiently using the CO-rebreathing method.Keywords: antianemic agent; biological marker; ferric ion; ferrous ion; ferrous sulfate; hemoglobin; iron polymaltose; adult; article; blood; breath analysis; case report; drug administration; endurance; female; human; intramuscular drug administration; iron defici Anaemia; Erythropoiesis; Haemoglobin mass; Iron deficiency20112016-02-24