I have my annual skin check tomorrow. Luckily, no fasting required. But I do have to do the Full Monty for a lovely 30-something doctor lady. She's so polite she never even chuckles.
The worst blood work is when they schedule you for noon or thereabouts. It means you either get up for breakfast at 2 am or you fast from dinnertime on. Neither is much fun. But it's better than colonoscopy prep!
