How is 1099-Misc counted for participating in a medical research study?

It is other income.

To enter a 1099-MISC for miscellaneous income in TurboTax:

1. Open or continue your return
2. Search for 1099-misc and select the Jump-to link
3. Answer Yes to Did you get a 1099-MISC?
   • If you already entered a 1099-MISC, you'll be on the 1099-MISC Summary screen, in which case you'll select Add Another 1099-MISC
   • If you need to edit or delete a previously entered 1099-MISC, select the appropriate button
4. Enter the info from your form into the corresponding boxes
   • If you need to enter boxes 4–6 or 8–17, check My form has other info in boxes 1–17 to expand the form

Boxes 1 and 2 missing from your 1099-MISC screen? Go back to the main 1099-MISC screen using the steps above.