depends. i buy from getpinz.com. they have a combo pack with syringes with loaded needles and spare needles on side. this is good so you order 23guage on the syringe to draw, and 25 gauge to swap onto to pin

Never buy the "bd retractable syringes" i was given a bag of them for free from friend who works in medical industry. worst needles ever to use for oil

Yeah, they are - I've never seen any that aren't anyway. If you're planning on buying other needles, just make sure you know whether you need Luer Slip or Luer Lock.

All the ones I have used have been. And I buy one-time-use syringes.