 [ Symptoms ] can gender be determined by a blood test  in our society today a lot of discussion has been made about sex change operations transgender questions and other social issues first is male or female able to be determined by a blood test and second if someone wants to change sex can this be achieved by hormones surgery etc or can a blood test prove conclusively that someone is a male or female regardless of environmental changes after birth finally if a blood test can determine sex can this too be changed [ Disease ] assuming you have not traveled to any third world countries recently it is highly unlikely you have a parasite in your gums it is much more likely you have something lodged in there such as a popcorn hull if your gum is very swollen it naturally is going to move yield when you push on it with your finger if the swelling is caused by an abscessed tooth then you could feel fluid moving around under the skin if the situation does not clear up on its own within a couple of days or if you begin experiencing severe pain a high fever andor discharge from the swollen area then a trip to the dentist is in order wishing you well