Community β€Ί Injection Technique

Pinning Velocity

25 replies16 peopleMar 20, 2026β˜† Follow
Summary

How fast is it safe to inject with insulin syringes for peptides like Retatrutide?

Users report a range of injection speeds from a couple seconds for 30-40 units up to ten seconds or more for larger volumes, with most favoring a steady pace rather than rushing. Several leave the needle in place for 2-4 seconds afterward to reduce leakage. Oil-based or thicker solutions are injected more slowly than water-based ones. Concentration levels and needle gauge also factor into comfort and technique.

What this discussion establishesWhere people disagree

Some prefer very rapid injection while others emphasize slow steady pace to minimize discomfort or welts

Still open

Whether injection speed meaningfully affects absorption, leakage, or tissue damage for these compounds

Nothing here is advice.

25 replies Β· 16 people
NorthThistle87archiveopening postMar 20

What's the usual speed people use when injecting with insulin syringes? I push 36 units across just a few seconds and wonder what the upper limit is before it becomes an issue.

ClearHarbour45archiveMar 20

I go with the usual 950 fps.

PlainAlder11archiveMar 20

Like throwing darts. I assume you keep the syringe in place for a couple seconds afterward. Why 36 units, and what compound are you using?

NorthThistle87archiveMar 20

I keep the needle in for a second or two once the plunger is down. The compound is Retatrutide. My latest 30mg vial got mixed with 1.8ml BAC, so 36 units equals a 6mg dose.

PlainAnchor84archiveMar 20

Pinning velocity wins the forum today I fear 😹😹😹

WarmMeadow92archiveMar 20

This morning I administered 85 units, and the whole process seemed to drag on forever. I kept wondering when the injection would finally finish. The amount of liquid looked enormous. My method stays gradual and consistent, taking about three or four seconds in total. Once the plunger is fully depressed I keep the needle inserted for four seconds exactly. I cannot recall how the habit started, but I still follow it every time. People sure pick up strange routines.

WryHarbour76archiveMar 20

The almighty voice proclaimed that the sacred hundred unit needle must come out first. After that the jab goes into my own body while I count exactly four and nothing else. That total alone is permitted with no going past it to five or stopping early at three unless it leads straight there. Six gets ruled out entirely. Reaching the fourth number means yanking the blessed tool back out of my now dosed self as the vision required.

SharpLedger58archiveMar 20

For watery mixtures I tend to inject around three to five units each second. With oily ones or glutathione and l-carnitine I take more than a second for each unit. Should the total go past roughly ten units I keep the needle in place another three or four seconds after finishing.

PlainAlder11archiveMar 20
↳ replying to @WarmMeadow92

This morning I jabbed a pair of sixties. One went into me and another into my wife. I take care of the five count personally.

ClearHarbour45archiveMar 20
↳ replying to @NorthThistle87

That works out well. A couple seconds or four seconds should be alright. This is not about 3cc at all. Rely on your own steps.

NorthThistle87archiveMar 21
↳ replying to @PlainAlder11

I gave myself thirty six units just now but ended up nicking a tiny vein in my belly area so it bled for about sixty seconds.

IronThistle53archiveMar 21

Owning an automated pen has me thinking I'm missing out since its pace stays dull and never varies.

NorthThistle87archiveMar 21
↳ replying to @IronThistle53

Pens aren't on my mind for personal use, but once my partner wraps up nursing she'll start that Reta stuff and I'll probably end up prepping the injectors for her haha

WarmWillow50archiveMar 21
↳ replying to @IronThistle53

No need for concern since I rely on diabetic needles and end up feeling excluded anyway. The whole thread leaves me puzzled yet that old biblical phrasing around the sacred injector made me chuckle.

WarmHarbour28archiveMar 21

Those insulin markings really piss me off. My shots come out to half a milliliter equaling fifteen milligrams. The whole thing drags on for ten seconds minimum. That sting actually turns me on.

BlueThistle40archiveMar 21

i'm hurrying to wreck every single one of those cells i encounter, just kidding around

NorthThistle87archiveMar 21
↳ replying to @WarmHarbour28

Is that strength and amount for real? I wonder if it's actually the genuine thing, and whether raising it changes how much it stings. Haha

SlowBramble78archiveMar 21
↳ replying to @NorthThistle87 (opening post)

This feels just like the night after my wedding. Everything wrapped up way too soon and in a real hurry!!

PlainAnchor67archiveMar 21

Peptides go pretty fast in one or two seconds while oils move slower and take around five or six.

SteadyQuill55archiveMar 21
↳ replying to @ClearHarbour45

You're accelerating far beyond my comfort level. My maximum velocity matches a plummeting human body, approximately 32.2 feet per second squared, preventing any chance of a bruise forming.

SharpMeadow98archiveMar 21
↳ replying to @NorthThistle87 (opening post)

Back when my doses were bigger I switched to thicker needles. The thickest insulin syringe I located was 27 gauge. Luer lock setups let me go even thicker though like 25 or 18. For 150 units I split it across two separate 1 milliliter 27 gauge insulin syringes doing 75 in each. Once I tried a single shot with 5 milliliter luer lock and 25 gauge but the lump under the skin got huge so I split it into two spots on opposite sides instead. I'm relieved I no longer handle that much volume.

WarmHarbour28archiveMar 21
↳ replying to @NorthThistle87

My experience began at the starting dosage level. All the vials across the range of strengths hold exactly the same liquid volume. Because of that I stuck with maintaining this exact strength level as my standard approach. Needles at 31 gauge or finer turned out to be necessary for me personally as well.

PlainCompass54archiveMar 21
↳ replying to @NorthThistle87

I inject my ten milligram dose using twenty units equaling point two milliliters. The stinging feeling stays exactly the same. An insulin syringe releases everything the moment the plunger moves so pausing or counting seconds before pulling it back out serves no purpose. Pens are the only ones that call for any such step.

PlainAlder11archiveMar 21
↳ replying to @NorthThistle87

She refuses to handle that job herself, forcing me to take care of it instead, though it's far from fun. 😁

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