CommunityReconstitution & Math

Reconstitution question

26 replies17 peopleJun 8, 2026☆ Follow
Summary

Is the math right for dosing after reconstituting a 60 mg vial with only 2.6 ml BAC water, and what should be done after accidentally removing the rubber stopper?

The original poster mixed roughly 2.6 ml BAC water into a 60 mg vial and calculated a 9-unit dose for 2 mg weekly. Multiple replies confirm the math but stress that cracking the vial open exposed it to contamination. Advice centers on discarding the vial or pushing the solution through a 0.22 µm PES filter into a fresh sterile vial, then using it quickly. Several users note that a 60 mg vial is oversized for a starter dose and will sit too long in the fridge.

What this discussion establishesWhere people disagree

Whether to filter and continue using the opened vial for a few weeks versus discarding it entirely.

Still open

How much peptide is actually lost during filtration and whether the filtered solution remains safe beyond a couple of weeks.

Nothing here is advice.

26 replies · 17 people
PlainMeadow38archiveopening postJun 8

First time doing this. When I drew the BAC water the syringe only got about 2.6 ml even after I opened the whole vial to try and get the rest. I added that to the 60 mg of Reta. Starting at 2 mg a week the calculators say my dose should be 9 units. Does the math check out? Also, how often do BAC vials come underfilled?

SlowBramble67archiveJun 8
↳ replying to @PlainMeadow38 (opening post)

The math lines up, but the method does not. You should never open vials like that. Once the seal is broken the contents are open to air contamination, and that matters more than wearing gloves.

WryMarble87archiveJun 8

The numbers work, but a 60 mg vial is a lot to start with. Even when you titrate up it will take a long time to finish, and the chance of contamination goes up the longer it sits.

LevelPebble75archiveJun 8

Two issues here. You did not need to pop the whole top off the vial. The rubber stopper should stay in place and you just push the insulin needle through the middle of it. Second, at 2 mg a week the vial will be in the fridge far longer than is safe. I would not want to use anything that has been sitting more than about six to eight weeks.

IronLantern24archiveJun 8
↳ replying to @PlainMeadow38 (opening post)

Sixty milligrams is a big amount when you are just starting. My first vial was smaller and still lasted nine weeks. Since the vial was opened I would not keep it that long. Filtering might not change the situation now.

CopperSignal27archiveJun 8

You only remove the plastic cap, not the rubber stopper itself. Around the edge there is a metal ring and the needle goes through the rubber in the center. Wipe the stopper with alcohol first. It looks like the stopper came off completely, so there is no way the vial stays sterile for weeks. The first dose might be fine, but after that bacteria or fungi can grow. If one vial does not have enough BAC, use two to reach an even amount like 2 or 3 ml so the math is simpler. At 3 ml the concentration is 20 mg per ml, so 0.1 ml gives 2 mg. Small volumes are harder to measure accurately and bubbles can throw the dose off by around ten percent.

PlainMeadow38archiveJun 8
↳ replying to @CopperSignal27

Would it be all right to use this vial for about four doses, say a couple of weeks, as long as nothing looks cloudy or grows in it, while I wait for a replacement?

LevelWillow41archiveJun 8
↳ replying to @PlainMeadow38

Because it has been open to room air you should run the whole solution through a 0.22 µm PES syringe filter into a new sterile vial. After that I would use it and act like none of this happened.

SteadySparrow75archiveJun 8

I have some 20 mg kits on hand but ordered a few 10 mg ones to cover the low starting doses without having so much product sitting around.

CopperSignal27archiveJun 8
↳ replying to @PlainMeadow38

It is your choice in the end. Putting bacteria under the skin can lead to different outcomes. Most of the time the immune system clears them with no issue. Next is a small abscess that might need antibiotics. Worse is a spreading infection that could require hospital care. The least likely but most serious is it getting into the blood. The first dose is probably fine because there has not been time for anything to multiply. After that even with the preservative some organisms could grow, and the risk rises the longer it sits. Probably not worth it.

WarmCompass44archiveJun 8

Before I started any peptides I watched a lot of videos on how to reconstitute. At this point it seems you are not ready. Treat the 60 mg as a learning cost and move to the next vial after doing more reading on both reconstitution and storage. A medical bill would be worse than losing one vial. Also 60 mg is too much for a first attempt. I began at half a milligram a week and still needed time to adjust.

PlainAlder11archiveJun 8
↳ replying to @WryMarble87

That was one of the first things I noticed too. That is thirty doses.

GreenMeadow54archiveJun 8

Time for some direct feedback. You need to leave the gray market. The errors you made show you did no reading or research before starting something that can affect your health. Not everyone is suited for this, and it is clear this is not for you. It may sound harsh but I am trying to stress how important proper research and risk assessment are.

RustTimber22archiveJun 8

Not trying to ruin the mood, but bacteria exist. More research should happen before you inject anything. Sterility is the main factor for success.

PlainMeadow38archiveJun 8
↳ replying to @LevelWillow41

So running it through the filter should make it okay to use?

LevelWillow41archiveJun 9
↳ replying to @PlainMeadow38

If you are worried about bacteria, fungi, molds, and particles, a 0.22 µm PES syringe filter will take them out.

WryLedger88archiveJun 9

Why remove the stopper from the vial in the first place?

SlowLantern29archiveJun 9
↳ replying to @PlainMeadow38

No, throw it away. Since the earlier advice was not understood, spend more weeks reading before trying again.

NorthCompass57archiveJun 9

I have looked at sites for medical supplies. I did not notice filters before because I did not know about filtering peptides. If I check those sites again will they have filters listed? Also, is the filter good for multiple uses or only one time?

NorthCompass57archiveJun 9

Never mind, I found the answer in another thread. I should have looked first.

PlainAlder11archiveJun 9
↳ replying to @NorthCompass57

A filter is single use only. You can get them where you buy syringes or from various online places.

NorthCompass57archiveJun 9
↳ replying to @PlainAlder11

Thanks a lot, that helped me out. Respect.

SlowBramble67archiveJun 9
↳ replying to @NorthCompass57

You also need 3 ml luer-lock syringes if you do not already have them. Not every syringe works with the filter.

NorthCompass57archiveJun 9
↳ replying to @SlowBramble67

I already have some for my other injections. Thanks for the extra tip. You all are helpful.

PlainMeadow38archiveJun 9

On the filter idea, what is the best way to recover as much peptide as possible? Push air at the end or push some BAC water through?

BlueAlder28archiveJun 9
↳ replying to @PlainMeadow38

For your case I would keep injecting until you can get a filter and a new sterile vial. Either air or BAC water works for the flush. You decide what the cost is worth. You will need one needle to reconstitute and draw, then another needle plus the filter and a fresh vial to transfer into. After the main push you can break the syringe from the filter, pull some air, and push again. For maximum recovery an extra needle and a little more BAC water can flush the filter. I usually just use air. There is debate on how much an air push actually recovers from a 13 mm filter and whether a 4 mm filter can handle 3 ml without clogging.

NorthCinder83archiveJun 9

You can try, but expect to lose 10 to 30 units during filtering. At 10 units per 2 mg dose that means one to three doses stay behind in the filter. If the syringe is big enough, an air purge is simplest. The fewer times you poke the vial the better the chance it lasts, but thirty weeks is doubtful. You might raise the dose faster after the first few weeks and try to finish what you can inside ninety days. Extra punctures only increase contamination risk.

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