Lots of medical turtle stuff down here, if you wanna use it. If not, feel free to ignore. I just freaking love turtles and reptiles and learn about their medical needs in my spare time since I plan to have a few some day.
So, interestingly, when blood is drawn from a turtle, it's usually drawn from the neck. Close above the shell, jugular vein area.
And sometimes from the same spot right above the tail. That vein is called the coccygeal vein, or the tail vein.
However, the ninja turtle boys are mutants, and anthropomorphic turtles, so their anatomy may be more similar to a human in terms of vascular and arterial (veins and arteries), so elbow/wrist may be more appropriate.
Or, secret third option, an in-between. Like the shoulder.
Honestly I'm not sure it even matters since we'd have no way of knowing for sure in the case of mutant humanoid turtles, but I don't think the shoulder would work realistically in any case here due to the difficult vein and artery placement there.
(I couldn't find any good vascular maps for a turtle so have a weird minor-detail one from a medical journal about sea turtle anatomy. Note: some internal structures vary between turtle species due to environment and body shape, but only slightly.)
(Also note: there are two separate pictures due to the labeling. It's the same map, but there's so many things to label they had to make two.)
So, just for funsies, I thought you might like to know where they draw from with actual non-mutated turtles. Just in case.
Here's some terminology and other facts if you ever wanna use that:
The veins typically sought out for blood drawing in turtles are the jugular and tail vein, but a couple others may work. This is typically because most other drawing sites, like the arms, have a much higher chance of lymph contamination in the sample. The jugular is the least likely site to give this contamination.
It's not recommended to try to access the jugular when the head is in the shell, nor is it recommended to attempt to get the head out of the shell for the sample. In those cases, sedation is the preferred method. Mostly to not hurt the animal.
The tail vein is the second best option, and can be approached ventral or dorsal (from underneath or from the top).
If a turtle keeps their head in their shell and sedation is not an option, the subcarapacial sinus is used. It lies inside the carapace at the level of the cervical vertebrae. So basically right at the top above the neck at the juncture between the neck and the shell.
(medical article snippet below)
Here's another visual reference for the preferred spots
Hope this helped! Or if you don't feel like going through this much trouble for your "just for fun" comic, I hope you enjoyed learning something new! 😊
Woah! Thank you for this! I will definitely keep this in mind for the future of this project and/or any other turtle projects I do.
Thank you so much for going out of your way to write all this out for me! I found it actually pretty interesting! Maybe this will convince me to look up a little bit more about turtles in the future :33