How can i know if my SN is expired/will work?

[xkidx]

I have some i bought maybe 3-4 years ago, at one point the ventilators in my apartment broke, and it got so hot and humid that water was dripping from inside of the window etc.... is there any chance its still useable?

 

[PArazi]

Blood test. At least for information purposes. For use, if possible, a new one would be better.

If you are going to do the blood test, if you can, post the result, with the date on the bottle...

With all due respect, there are some compulsive liars here.

 

[jodes2]

I don't think it expires easily, as long as it's sealed

 

[xkidx]

It doesn't have any expiration date on it. it came in a plastic "vacuum" seal type bag, i havnt been able to find any seller that ships to sweden and its become urgent since i will be evicted very soon

How much blood is needed for the bloodtest?
I will post blood tests later i dont want to open it before its time in case it works

 

[Rejected1541]

My bottle came today and the expiration date on it is 6 years. Have no idea if that helps.

 

[PArazi]

It doesn't have any expiration date on it. it came in a plastic "vacuum" seal type bag, i havnt been able to find any seller that ships to sweden and its become urgent since i will be evicted very soon

How much blood is needed for the bloodtest?
I will post blood tests later i dont want to open it before its time in case it works

Make sure your SN was still closed in vacuo. In that conditions the shelf life is almost undefined (decades). IMO, temperature is the most important thing. If you not expose to high temperature variation, it's fine.

IMO u need 3ml of blood. Use a syringe and find a good vein.

My bottle came today and the expiration date on it is 6 years. Have no idea if that helps.

I believe it can last three times longer. Maybe 20-30 years.

 

[locked*n*loaded]

Not meaning to hijack this thread, but I was curious if it matters where the blood is obtained? Will the blood from a fingertip work, like that which is obtained from one of those lancets used for blood sugar testing? Does the blood have to be vein blood as opposed to capillary blood?

 

[xkidx]

Make sure your SN was still closed in vacuo. In that conditions the shelf life is almost undefined (decades). IMO, temperature is the most important thing. If you not expose to high temperature variation, it's fine.

IMO u need 3ml of blood. Use a syringe and find a good vein.

I believe it can last three times longer. Maybe 20-30 years.

There was a period where my ventilnation broke, and it was about 35c prob in my apartment and very humid, do u think this is hot enough to ruin it?
there was like condensation on all items in the apartment

 

[Forever Sleep]

I've heard there's both the aquarium and blood test for it. Personally, I think I'd do both- even if I had just bought the stuff just for peace of mind.

Not meaning to hijack this thread, but I was curious if it matters where the blood is obtained? Will the blood from a fingertip work, like that which is obtained from one of those lancets used for blood sugar testing? Does the blood have to be vein blood as opposed to capillary blood?

Yes, I wondered this. I guess the main point is that the blood is oxygenated (a brighter red) to begin with. Think the blood I've seen from finger pricks looks pretty oxygenated.

 

[PArazi]

There was a period where my ventilnation broke, and it was about 35c prob in my apartment and very humid, do u think this is hot enough to ruin it?
there was like condensation on all items in the apartment

Is working. 35c is within the minimum temperature. But variation is a problem. Despite what you said about condensation, the temperature variation is smaller in the presence of water (humidity). The variation tends to be much greater (faster) in a dry environment. Your sn is working, but it won't cost you anything to test with blood.

When talking about temperatures to change the chemistry of drugs, I believe they are referring to 40-50C, for long periods. Some chemicals are more sensitive, others not. SN seems to be strong in this point.

Are you really sure the SN is in a vacuum? Hermetically sealed. Is the moste important than anything discussed here.

Not native speeaker*

 

[gomenasai]

Why does SN need to be vacuum-sealed?

 

[PArazi]

Why does SN need to be vacuum-sealed?

Reacts with O2 and turns into sodium nitrate, gradually

 

[xkidx]

Is working. 35c is within the minimum temperature. But variation is a problem. Despite what you said about condensation, the temperature variation is smaller in the presence of water (humidity). The variation tends to be much greater (faster) in a dry environment. Your sn is working, but it won't cost you anything to test with blood.

When talking about temperatures to change the chemistry of drugs, I believe they are referring to 40-50C, for long periods. Some chemicals are more sensitive, others not. SN seems to be strong in this point.

Are you really sure the SN is in a vacuum? Hermetically sealed. Is the moste important than anything discussed here.

Not native speeaker*

Im not 100% sure its fully vacuum sealed, its in a plastic wrapping and very compact, but it has sort of a "flap" on the outside where i can not tell if its fully sealed or not..., i dont really wanna open it just yet in case it is fully sealed

 

[PArazi]

Im not 100% sure its fully vacuum sealed, its in a plastic wrapping and very compact, but it has sort of a "flap" on the outside where i can not tell if its fully sealed or not..., i dont really wanna open it just yet in case it is fully sealed

Make the blood test. If you think the reaction was not acceptable, abort. Wait for another chance. I don't know about the reaction, but the blood turns to brown when the chemistry is ok.

IMO, sn should not be sold in a plastic bag. I know it is easier to carry/tranport

 

[SadBlueLemon]

I don't think those conditions would make a difference if the SN is properly sealed. The plastic would protect against humidity and 35C isn't high enough to cause chemical degradation in such a short amount of time. Can I ask where you got your SN from? I'm about to (in about 5-7 days) use some older SN myself. I bought it in the summer of 2020 from a source that was popular on this site back then (Polish seller or an auction site). Mine is double packaged in plastic ziplocks, looks the same now as it did when I received it and it has been stored at typical room temp, never opened it either. I guess I'll find out how well it performs soon enough.

 

[Fktw0rld]

It's good. Just do the finger stick and clear your mind. I was thinking the same about mine about a month ago, dropped a few drops and it went brown quick. Took about 1 minute to do.