Abstract

De Marco and colleagues claim that the standard account of invasiveness as commonly encountered ‘...does not capture all uses of the term in relation to medical interventions 1 ’. This is open to challenge. Their first example is ‘non-invasive prenatal testing’. Because it involves puncturing the skin to obtain blood, De Marco _et al_ take this as an example of how an incision or insertion is not sufficient to make an intervention invasive; here is a procedure that involves an incision, but it is regarded as non-invasive. However, this ignores the context, and the term should really be understood in reference to the fetus. It is hard to believe healthcare professionals regard taking blood to measure, for example, ferritin levels as invasive but taking blood to look for fragments of fetal DNA as not. If anyone uses the term thinking it is not invasive to the mother, the...