Compliance, Regulatory & Policies - 
                                                                                                                            Policy, Billing, or Coverage Update - 
                                                                                                                            2025
                                                                                
                                    Reimbursement Policy: PO-RE-056 Gamma-glutamyl Transferase
                                    Gamma-glutamyl transferase (GGT), also known as gamma-glutamyl transpeptidase (GGTP) (Singh et al., 2006; Vroon & Israili, 1990), is an enzyme that has a half-life of between fourteen and twenty-six days and is present in the cell membrane of many different tissue types, including the heart, brain, seminal vesicles, kidneys, bile duct, spleen, and gallbladder (Dillon & Miller, 2016; Dixit & Singh, 2015).
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