eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2019-12-28 12 04 1755 1759 10.13005/bpj/1805 29459 article Jimson Sudha 1 Amaladas Julius, 2 Samson Jimson 3 Kesavaram Padmavathy 4 Department of Oral Pathology and Microbiology, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research (BIHER), Chennai, India. Department of Biochemistry, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research (BIHER), Chennai, India. Department of Oral and Maxillofacial Surgery, Tagore Dental College and Hospital, Chennai, India. Department of Microbiology, Research Laboratory for Oral and Systemic Health, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research (BIHER), Chennai, India Serum lactate dehydrogenase (LDH) is a marker of cellular necrosis and is elevated in oral potentially malignant disorders, Oral Submucous Fibrosis (OSMF). Serum LDH levels have been used as a valuable biochemical marker in diagnosis of OSMF.  To evaluate and compare the levels of serum LDH and haemoglobin in OSMF with normal healthy individuals. Two mL of venous blood was collected by under aseptic conditions and serum was separated from the normal healthy control subjects (Group 1, n= 22) and the OSMF (clinically and histopathologically confirmed cases) patients (Group 2, n= 22). Quantitative estimation of serum LDH and haemoglobin was performed. Significant rise was observed in the serum LDH levels (518.14 ± 48.62 IU/L) while the mean Hb levels (11.3 ± 1.14) were decreased in patients with OSMF in comparison with normal healthy individuals (LDH: 189.77 ± 28.30 IU/L, Hb: 12.94± 0.98 gm%) (P value < 0.0001, < 0.0001). Serum LDH and Hb estimation would serve as a valuable biochemical marker in the diagnosis of OSMF. https://biomedpharmajournal.org/vol12no4/inverse-correlation-of-serum-lactate-dehydrogenase-and-haemoglobin-levels-in-patients-with-oral-submucous-fibrosis/ Haemoglobin Lactate dehydrogenase Oral Sub-Mucous Fibrosis