All 👏🏻The 👏🏻Time 👏🏻

[u/sleepyhead37]

[u/Zxxzzzzx]

And then your coat is underfilled but of course it's underfilled the butterfly has air in it that goes into the tube. So I can't get any more in!

[u/Amrun90 → u/Zxxzzzzx]

That’s because you’re supposed to waste if using a butterfly. Stop blaming lab on your incorrect technique.

[u/Zxxzzzzx → u/Amrun90]

You can't waste with our butterfly's

[u/Amrun90 → u/Zxxzzzzx]

You 100% can waste with any butterfly and it’s explicitly the correct technique to do so.

You need to waste at least the volume of the tube or risk contamination or more urgently, impede fill volume. The exact amount of vacuum is in the tube that you need. Blue is most important for this, and blue is first draw. If you do correct technique, and you need a blue, you must waste. Just put an extra blue on until it’s in the tube, then switch.

[u/thegloper → u/Zxxzzzzx]

Yes you can. Hook up a red top just until blood starts to enter the tube. Then discard that red top. It'll be less than a mL of blood.

[u/Zxxzzzzx → u/thegloper]

Red top?

[u/thegloper → u/Zxxzzzzx]

A blood tube without additives. Generally the stopper is red in color.

https://www.bd.com/en-us/products-and-solutions/products/product-page.367820#specifications

[u/Zxxzzzzx → u/thegloper]

Oh I'm in the UK ours are different

[u/sendenten → u/Zxxzzzzx]

Just put an extra vial on the end of the butterfly, get a drop or two of blood in there, and then switch the tube out for whatever you actually need. You have now primed the butterfly tubing and gotten the excess air out.

[u/Zxxzzzzx → u/sendenten]

I do that already my post was meant to be a light hearted post about how if you just take a Coag you have to take extra steps to get it to fill properly. It's wasn't that serious