You can legally view the series "Lab Rats" online on Disney XD's official website. The website streams the most recent episode for free for channel subscribers and nonsubscribers.
"Lab Rats" is available on multiple digital streaming websites. Disney XD channel subscribers can access the latest episodes through on-demand apps, boxes and websites from their cable providers. Netflix provides its subscribers with access to the first three seasons of the series.
"Lab Rats" fans can buy current and past episodes. Amazon Prime sells the episodes for $1.99 each. The cost to buy each one of "Lab Rats" four seasons range from $19.99 to $41.99, in standard definition. Google Play also sells episodes of the series for $1.99 per episode, as of 2015.