I apologize for the stupid question. My blood type is negative, my hu…

I apologize for the stupid question. My blood type is negative, my husband's is positive. I was put on record at a free women's consultation, where they told me to have my husband get his blood and X-ray done. What kind of blood? A general analysis or Rh or something else? They usually give a referral but here they just said wait for the results.