eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2021-09-30 14 3 1359 1362 10.13005/bpj/2237 40659 article Zahraa Jasim 1 Hayder Aledan 2 Department of Medicine, Division of Dermatology, College of Medicine, University of Basrah, Iraq Department of Medicine, Division of Nephrology, College of Medicine, University of Basrah, Iraq Background and objective: Iron deficiency is a well-documented cause of diffuse non-scarring hair loss. We aimed to find the best representative laboratory parameter for iron deficiency. Methods:This was a cross-sectional observational study conducted on 51 female patients with diffuse non-scarring hair loss and iron deficiency state. Iron deficiency was diagnosed as serum ferritin below 30 ng/ml, TSAT below 20% or CHr below 29 pg. Results: Among 51 female patients with diffuse non-scarring hair loss with laboratory proven iron deficiency; low CHrwas reported in 50 (98%) patients, low TSAT was reported in 43 (84.3%) patients, low serum ferritin was reported in 28 (55%). Conclusion:The reticulocyte hemoglobin content (CHr) shows the highest frequency of iron deficiency in patients with diffuse hair loss and iron deficiency state. https://biomedpharmajournal.org/vol14no3/reticulocyte-hemoglobin-content-as-a-best-indicator-of-iron-deficiency-in-female-patients-with-diffuse-non-scarring-hair-loss/ Ferritin  Hemoglobin Hair Loss  Reticulocyte Hemoglobin Content  Transferrin Saturation