Hi, how can i tell the turbotax is correctly splitting my long term and short term capital gains?

[MarilynG]

If you are reporting from a 1099-B, the Transaction Codes distinguish between short and long term gains.  Other entries will have a Purchase Date and Sale Date for this purpose.

You can Download/Review/Print your return to view your Capital Gains and Losses on Schedule D, which will split out Long and Short Term Gains in Part I and Part II (screenshot).

Here's more info:

https://ttlc.intuit.com/replies/3301738