Question

Ja v cera dala krovi na analazi...ili dal krovi.....kakoj pravilnij

Answer 1

Я вчера сдала кровь на анализ

Answer 2

Если ты девочка- Я сдала кровь на анализы.

Если ты мальчик- Я сдал кровь на анализ.

Answer 3

It appears that the text you have written is a mixture of different languages, and it is not clear what you are trying to say.

If you are trying to ask whether it is correct to say "Ja včera dala krv na analýzu" in Czech, then the answer is yes, it is grammatically correct and translates to "I gave blood for analysis yesterday" in English.

If you have a different question or need further clarification, please feel free to ask.