Das ist mein oral syringe. I need some help!

[Atomini]

Here, I explain my question in this picture:



It's that bottom spout part as you can see that makes me wonder if the syringe is taking more than I am meaning to get.

[kynetguy]

That portion of the syringe is called "dead space." When you draw up 1mL that portion is not counted as part of that amount. Because when you depress the plunger, you will not get what is in that area out. The compund/liquid in that area is dead space, a filler so to speak.

This is also why you never get 10 full 1mL injections from a 10mL vial. when you add a pin to a syringe, you actually increase dead space.

The only way to combat dead space loss is with compounds like insulin or hCG that you are shooting sub-q. In this case you can get zero dead space insulin syringes.

So basically, don't sweat that. If you draw to the 1mL line, put it in your mouth and depress the plunger, you will get 1mL. But you will also have a little residual compound in that dead space.

[Atomini]

AH okay, I see. Thanks for clearing that up.

So the same thing happens with injections, too, eh? How much in an injection would be lost to this 'dead space'?

[ziinus]

If you want to measure more accurately, Take air in the syring so the oil is between one and two ml marks

[Atomini]

I'm sure you're only reccomending that for oral syringes... not for IM injections, right?

[kynetguy]

If you want to measure more accurately, Take air in the syring so the oil is between one and two ml marks

This will work for orals if you follow the liquid with air. But of course will not work for injections. Because by the time you purge your air, you have an inaccurate dose because some of your volume has been lost to dead space. And of course purging with air on an injection is never a good or even halfway intelligent idea.

[kynetguy]

AH okay, I see. Thanks for clearing that up.

So the same thing happens with injections, too, eh? How much in an injection would be lost to this 'dead space'?

I never have caculated it. But it seems when I take prop at 75mg/ED (.75mL) I get 12 full injects with about .3mL left over. SO let me do the math.

.75*12 = 9mL
10mL - 9mL = 1mL not injected
1mL -.3mL remaining - .7mL lost to dead space

.7mL lost/12 injections = .06mL dead space per injection.

On a 12 week cycle using prop at 75mg/day thats about 5.04mL, if you recover the remaining .3mL and use it, which I always recover anything I can from my vials.

thats a rough estimate and that is using excell 1cc syringes and a .23ga x 1in syringe.

So its not much, but it does play a role over the long haul.

At least I think I get 12 injects. It might be 11. If that's the case, them my math is wrong and the dead space is actually more.

[thunderin]

Just load extra gear into your syringe to be sure you get enough

[Atomini]

Kynetguy, is it safe and sanitary to recover and re-use that gear lost to dead space?? Doesn't sound like it to me.

Of course, if it were winny, you could just take the extra and drink it. But to re-inject others... ?

[kynetguy]

Kynetguy, is it safe and sanitary to recover and re-use that gear lost to dead space?? Doesn't sound like it to me.

Of course, if it were winny, you could just take the extra and drink it. But to re-inject others... ?

No
Double No
Hell No
and Double hell no.

I guess I left my recovery process a little vague.

I recover the remainder in the vial, which is usually .3 - .5 mL. The last little bit in it. I will suck it out, then top the syringe off with a new vial.

That which is lost to dead space should not even be considered, thought about or worried about. Its not worth the possibility of infection.

Sorry I left that a little gray.

[Decoder]

that's big dead space... there are needles out there with less.

[buffgator]

dont you guys just leave an ever so tiny air bubble that way when you push your plunger all the way in the air bubble will clear the dead space and needle. Im talking really small air bubble.

[kynetguy]

that's big dead space... there are needles out there with less.

.06mL per injection is big?

[kynetguy]

dont you guys just leave an ever so tiny air bubble that way when you push your plunger all the way in the air bubble will clear the dead space and needle. Im talking really small air bubble.

While injecting air into a muscle is not a problem, i chose not to inject any air that I can avoid.