Can this be done? Does anyone do it?

Not sure the American Red cross page is low on details.

http://www.redcross.org/faq/#392

Where can I give blood?
Individuals wishing to make a blood donation to the Red Cross may call their local Red Cross Blood Services office or call 1-800-GIVE-LIFE.

You could phone them and see.

http://www.ehow.com/how_110908_sell-plasma.html

Expect to earn up to $35 for each donation (twice a week max). Donors who have been vaccinated for hepatitis B can earn up to $60 per week.

I know having hepatitis will prevent them accepting your blood.

http://www.ehow.com/ArticlePage.aspx?id=2195131&OriginalURL=%2fhow_2195131_earn-month-donating-plasma.html
(link from the above link)


http://www.redcross.org/services/biomed/0,1082,0_557_,00.html#med
Medications
In almost all cases, medications will not disqualify you as a blood donor. Your eligibility will be based on the reason that the medication was prescribed. As long as the condition is under control and you are healthy, blood donation is usually permitted.
Over-the-counter oral homeopathic medications, herbal remedies, and nutritional supplements are acceptable.
There are a handful of drugs that are of special significance in blood donation. Persons on these drugs have waiting periods following their last dose before they can donate blood:
Accutane, Amnesteem, Claravis or Sotret (isoretinoin), Proscar (finasteride), and Propecia (finasteride) - wait 1 month from the last dose.
Avodart (dutasteride) - wait 6 months from the last dose.
Aspirin, no waiting period for donating whole blood. However you must wait 48 hours after taking aspirin or any medication containing aspirin before donating platelets by apheresis.
Clopidogrel - wait 7 days after taking this medication before donating platelets by apheresis.
Coumadin (warfarin) , heparin or other prescription blood thinners- you should not donate since your blood will not clot normally. If your doctor discontinues your treatment with blood thinners, wait 7 days before returning to donate.
Hepatitis B Immune Globulin – given for exposure to hepatitis, wait 12 months after exposure to hepatitis.
Human pituitary-derived growth hormone at any time - you are not eligible to donate blood.
Plavix - wait 7 days after taking this medication before donating platelets by apheresis.
Soriatane (acitretin) - wait 3 years.
Tegison (etretinate) at any time - you are not eligible to donate blood.
Ticlid - wait 7 days after taking this medication before donating platelets by apheresis.
Ticlopidine - wait 7 days after taking this medication before donating platelets by apheresis.

I donate plasma a couple times a week, and I take adderall daily. Make sure you tell them because it's good for them to know, but you should be allowed to donate. I haven't had any bad experiences donating plasma. However, you have to make sure to eat and drink a lot before you go in, and adderall makes it harder for some folks to eat much.

They won't tell you if it didn't pass, but drugs or alcohol can elevate liver activity and that can make them disqualify your donation.