Blood donation is a generous act that saves lives, and many tattooed people wonder if they can be donors. The answer is yes, but with a waiting period. In Romania, according to Blood Transfusion Center regulations, after getting a tattoo you must wait at least 6 months before donating blood. This rule also applies to piercings and cosmetic procedures involving skin penetration. Why does this restriction exist? The waiting period is not related to tattoo ink but to the theoretical risk of transmitting blood-borne diseases. Procedures involving needles and skin penetration have a potential risk of transmitting hepatitis B, hepatitis C, and HIV, especially if hygiene standards are not met. In licensed professional studios, the risk of disease transmission is practically zero. Single-use sterile needles, autoclave-sterilized equipment, protective gloves, and strict hygiene protocols are used. However, donation rules are conservative and do not differentiate between licensed and unprofessional studios. In other countries, waiting periods vary: in the USA, the FDA recommends 3 months; in the UK, the period has been reduced to 4 months if the tattoo was done in a licensed studio; in Australia, the period is 6 months. How to plan: if you are a regular donor, schedule your tattoo considering your next donation. Plan ahead to minimize impact on your donor activity. At the donation center, you must honestly declare the date of your last tattoo. The medical form includes questions about tattoos, piercings, and other needle procedures. After the waiting period, there is no permanent restriction related to tattoos. You can be a lifelong blood donor regardless of how many tattoos you have, as long as you respect the waiting period after each new tattoo.