Got back from india. was in water. do i need tests for giardiasis?

Yes: Need to be tested for many organisms.

Do you have sx's?: If you have sx's - yes. Giardiasis is a waterborne illness caused by Giardia parasite. Sx's – there may be no sx's or diarrhea, oily floating stool, gas, nausea, vomiting & abdominal cramps. If untreated it can cause bloody diarrhea, dehydration & weight loss. Diagnosis- via blood test for antibodies, stool antigen & checking stool for ova & parasites.