01/13/2026
Why surgeons test your blood. Most people don't realize that plastic surgeons can actually detect if you've been smoking through a simple blood test. The cotinine test reveals ni****ne use from the past four weeks, which is crucial because smoking dramatically affects surgical healing. That's why most plastic surgeons require patients to quit smoking 4-6 weeks before any procedure - it's not just a suggestion, it's essential for safe recovery and optimal results.