Yes!
I am highly allergic to Poison Ivy and am very familiar with the rash and poison oils. It's even worse when the poison oils get into your helmets cheek pads
You need to approach cleaning the jacket (or any other contaminated garment) as if it was covered in nasty gear oil. The same techniques work with getting the urushiol out. Urushiol is the poison oil that makes life hell. If I know which part of the garment has been contaminated, I put on nitrile gloves (remember, I am highly allergic) and scrub some of that orange grease hand cleaner into the garment. After it sits for a bit, I then rinse with hot water. I avoid the water steam as well for fear the water vapor could carry the urushiol in the air. Finally, I toss the garment in the washer and run the washer on HOT, with nearly a full loads worth of detergent and finish it with an extra HOT rinse.
For your skin, I have found that a product called Tecnu works great. They have a scrub that works wonders on contaminated skin and even a non blistering rash. Tecnu also sells an anti-itch spray that works wonders soothing poison ivy itch as well as obnoxious insect bites.
Tecnu Extreme Poison Ivy Scrub
Tecnu Rash Relief Spray
I also pack Ivy X, which is a moist towelette that removes the urushiol from your skin. Stinks like hell, but it works. Handy to have when riding in the woods.
Ivy X Post Contact Poison Ivy Treatment Wipes
If the rash gets in your eyes, nether regions

, or the blisters start oozing uncontrollably, go to the doctor. You'll probably get a steroid shot, prednisone and/or a cream.