Percentage Venous Options in Pediatrics & Adults

Pediatric arm Inclusion Criteria: * Age 17 years of age or younger, * Intact skin, without rash,irritation, scarring, open abrasion or other injury in these sites. * Parent or guardian is English speaking * Pediatric patients 8 years older will be asked to provide assent * Participant does not have an acute or critical medical illness or injury requiring immediate evaluation and/or treatment. Exclusion Criteria: * 18 years of age or older * No intact upper extremities * Patient has had current or recent (within 6 months) venous access in the arm that will be evaluated. * Acute or critical illness or injury requiring immediate or urgent evaluation and treatment. Adult arm: Inclusion Criteria: * Age 18 years or older, * At least one intact upper extremity (intact from the base knuckle to the shoulder) * Intact skin on the dorsum of the hand, the ventral forearm, and antecubital fossa, without rash, irritation, scarring, open abrasion or other injury in these sites. * Participant does not have an acute or critical medical illness or injury requiring immediate evaluation and/or treatment. Exclusion Criteria * Younger than 18 years of age * No intact upper extremities * The participant does not have intact skin on the dorsum of the hand, the ventral forearm, and antecubital fossa, without rash, irritation, scarring, open abrasion or other injury preventing appropriate evaluation of these sites. * Non-English speaking participant. * Patient has had current or recent (within 6 months) venous access in the arm that will be evaluated. * Acute or critical illness or injury requiring immediate or urgent evaluation and treatment.