I have green veins and I see them a lot. Not popping out but vey noticeable on thighs and upper region. I did not workout but is it serious or normal?
If it is truly green, blood testing looking at Liver functions, Totally , Direct and Indirect Bilirubin , CBC , Copper levels as well as an US of the Abdomen to include , Liver, Gallbladder, look for portal hypertension and IVC pressures.
Would be a great start to evaluate this condition.