So im planning on getting my second sleeve pretty soon, but i have a question for those who have both arms sleeved. Have you ever encountered problems when getting blood work done? Whenever i get it done, they usually take it from the inside of my elbow (sometimes know as the ditch). However, i noticed on my left arm sleeve that my tattoos completely cover that area, and no veins can be seen. Would tattooing over my other ditch make it especially hard to get blood from? Or are there other spots they can use to get my blood from?