A tummy tuck should not be decided from GGT and ALP alone, but an elevated GGT of 140 needs an explanation before elective surgery. ALP of 123 may be only mildly elevated depending on the lab range, but together these can point to liver, bile duct, medication, alcohol, or other medical causes. Your surgeon and anesthesiologist should review the full panel, including AST, ALT, bilirubin, albumin, INR/clotting, blood count, platelets, medical history, medications, and possibly an ultrasound or medical clearance. If the cause is benign and your overall liver function and clotting are normal, surgery may still be possible. If not, it is safer to postpone until the abnormal results are investigated and optimized.