ARA-290 and Phosphate Buffered Saline

rpm2026

GLP-1 Apprentice
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I Wanted to query the forum about reconstituting ARA-290. I attempted to reconstitute the research peptide with bacriostatic water, but it always gels up after a few days.

I've read recently that phosphate buffered saline(PBS) is a viable solution to the issue. Is PBS safe for research purposes? Any advice around this topic?

Thank you for your insights.
 
I tried to reconstitute some that I got from Q last year. It was a mess. Never went clear. I threw all of them out.
 
rpm2026 said:
I Wanted to query the forum about reconstituting ARA-290. I attempted to reconstitute the research peptide with bacriostatic water, but it always gels up after a few days.

I've read recently that phosphate buffered saline(PBS) is a viable solution to the issue. Is PBS safe for research purposes? Any advice around this topic?

Thank you for your insights..
Click to expand...
For ARA-290, this is pretty common. It’s stable in PBS but often won’t dissolve (or gels) in bacteriostatic water alone.

A typical workaround is to dissolve first in a small volume of sterile, injectable grade PBS, then dilute with bac water once it’s fully in solution. That lowers phosphate concentration, adds preservative, and improves injection tolerance (the PBS alone would be pretty spicy).

Any clinical studies that have been done, used a buffer solution because of this issue.... Often PBS being the one used.

Just avoid lab grade PBS and don’t shake.
 
Jfrick11 said:
For ARA-290, this is pretty common. It’s stable in PBS but often won’t dissolve (or gels) in bacteriostatic water alone.

A typical workaround is to dissolve first in a small volume of sterile, injectable grade PBS, then dilute with bac water once it’s fully in solution. That lowers phosphate concentration, adds preservative, and improves injection tolerance (the PBS alone would be pretty spicy).

Any clinical studies that have been done, used a buffer solution because of this issue.... Often PBS being the one used.

Just avoid lab grade PBS and don’t shake.
Click to expand...
Appreciate the advice! You know a good supplier of injectable grade PBS?

Thanks
 
rpm2026 said:
Appreciate the advice! You know a good supplier of injectable grade PBS?

Thanks
Click to expand...
I'm in Mexico, so likely not helpful.
Dig a little and you'll find it in the US (if it's here, it's there 😉).
I'm not even sure my terminology is correct. Essentially, it should be sterile, isotonic, ph of body fluids (around 7.4), the water used should be WFI (water for injection), low endotoxin levels.
Maybe Google lab grade vs injection grade PBS..... Something like that. Sorry not more helpful 😊
 
Jfrick11 said:
I'm in Mexico, so likely not helpful.
Dig a little and you'll find it in the US (if it's here, it's there 😉).
I'm not even sure my terminology is correct. Essentially, it should be sterile, isotonic, ph of body fluids (around 7.4), the water used should be WFI (water for injection), low endotoxin levels.
Maybe Google lab grade vs injection grade PBS..... Something like that. Sorry not more helpful 😊
Click to expand...
Is this a good option?
 
rpm2026 said:
I wish it came in small 3ml vials to maintain sterility and exposure. Thst has been a big challenge finding pbs
Click to expand...
I'm thinking about trying to pierce the cap on the ultra pure with one of those clave doohickeys so I can fill a bunch of 10mL vials. If I'm careful and secure it down good (the plastic cap obviously won't hold like a rubber stopper does). Dunno if it will work. Wish I had a flow hood.
 
I found some vendor with 3ml pbs kits. I am just going to use that. Its been working so far and the ARA is staying dissolved.
 
rpm2026 said:
I Wanted to query the forum about reconstituting ARA-290. I attempted to reconstitute the research peptide with bacriostatic water, but it always gels up after a few days.

I've read recently that phosphate buffered saline(PBS) is a viable solution to the issue. Is PBS safe for research purposes? Any advice around this topic?

Thank you for your insights.
Click to expand...
Same issues here when I first started Ara-290
It does require PBS, I use 1ml of it to dissolve, then 1ml bac.
As others mentioned, you can add baking soda to bac but not sure how to do that and keep sterile.
I found a PBS supplier of sterile water online, Google PBS for labs.
Search for them and order online.
Been using for many months no issue. I keep bottle in dark closet, not in refrigerator.
Make I wipe cap and neck with swabs each time.

Also make sure the ARA and PBS are room temperature before you mix. It's very sensitive.
Good luck.
 
MaineUser said:
Same issues here when I first started Ara-290
It does require PBS, I use 1ml of it to dissolve, then 1ml bac.
As others mentioned, you can add baking soda to bac but not sure how to do that and keep sterile.
I found a PBS supplier of sterile water online, Google PBS for labs.
Search for them and order online.
Been using for many months no issue. I keep bottle in dark closet, not in refrigerator.
Make I wipe cap and neck with swabs each time.

Also make sure the ARA and PBS are room temperature before you mix. It's very sensitive.
Good luck.
Click to expand...
How long does it usually take for your ARA to dissolve fully in 1ml of PBS?

I did this exact method earlier this week and though I was eventually able to get the ARA to dissolve, it took a whole night. I left it in the cabinet in just the PBS, then added 1ml BAC in the morning after it was dissolved.
 
swimmer said:
Got my 290 from LN peptides. I just finished the kit. My sciatica seems much better. It dissolves very fast . 30 sec total time. It could be the KLOW or both.
Click to expand...
Any new experiences/opinion about ARA 290? Did the sciatica come back more since?
 
Calm Logic said:
Any new experiences/opinion about ARA 290? Did the sciatica come back more since?
Click to expand...
The sciatica has mostly been absent since I did the kit. I am almost certain it was the ARA290. I guess it is possible the KLOW or the growth hormone secretologes had something to do with it. That is the problem with doing lots of peps around the same time. Yesterday I made my second order with LN and I included an other kit. If the sciatica comes back I will be ready for it.
 
Camlbacker said:
Aside from good enough to order again, how was working with LN?
Click to expand...
I have not tried everything from the first order yet but everything I have tried has been great and the tests have been good. On the first order Cassie was very responsive and the order only took 9 days to get to the US from CN. When I ordered last night Cassie was a little slow to respond to questions at first. I was communicating on both TG and Whatsap. About 2 hours into the process it was like they brought in a new Cassie. Response was almost instant on both platforms with lots of "DEARS" and hearts like before. The initial slowness could have been a network problem or I might be too impatient. Hopefully it will get here as fast as the first package did. You can't beat their prices.
 
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