igf stability - AnabolicMinds.com

igf stability

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    justreading's Avatar
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    igf stability


    How stable is re-constituted igf?

    I have about 2/3 a mg that I used a month ago and have had in the fridge. I left it out 1-2 times too. Leo thinks igf is much more stable than we all suspect.

    Anyone have any hard data?

    I'm considering upping the dose or tossing it all together.

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    Quote Originally Posted by justreading
    How stable is re-constituted igf?

    I have about 2/3 a mg that I used a month ago and have had in the fridge. I left it out 1-2 times too. Leo thinks igf is much more stable than we all suspect.

    Anyone have any hard data?

    I'm considering upping the dose or tossing it all together.
    Storage
    The stability of a liquid solution of LR3IGF-I was monitored for a period of two years at storage conditions of -20 C, +4 C, +22 C, and +37 C. The final concentration of LR3IGF-I was in acetic acid. At various time points, samples were taken and compared to a lyophilized control (stored at 4 C). Listed below are the stability results for each respective storage condition.

    Storage Condition: -20 C (-4 F)
    Biological Potency No Change up to 2 years
    Immunological Activity No Change up to 2 years
    Mobility of Protein No Change up to 2 years
    Elution Profile by reversed phased HPLC No Change up to 2 years

    Storage Condition: +4 C (39.2 F)
    Biological Potency No Change up to 2 years
    Immunological Activity No Change up to 2 years
    Mobility of Protein No Change up to 2 years
    Elution Profile by reversed phased HPLC No Change up to 2 years

    Storage Condition: +22 C (71.6 F)
    Biological Potency No Change up to 2 years
    Immunological Activity No Change up to 2 years
    Mobility of Protein No Change up to 2 years
    Elution Profile by reversed phased HPLC No Change up to 2 years

    Storage Condition: +37 C (98.6 F)
    Biological Potency No Change up to 1 year
    Immunological Activity No Change up to 1 year
    Mobility of Protein No Change up to 1 year
    Elution Profile by reversed phased HPLC No Change up to 1 year
    In conclusion
    There is no significant difference in the potency of LR3IGF-I associated with the storage of the liquid formulation when stored at this range of temperatures. There is no evidence for loss of biological activity at any of the tested temperatures when stored as a liquid product. As you can see IGF can be quite stable for even a year at room temp, but if you want to keep it around for a while stick it into the fridge. So IMO the best way to store LR3 that is suspended in BA is in the freezer. The BA wont allow it to freeze. And if you have it suspended in AA, store it in the fridge.
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    Quote Originally Posted by idunk42
    Storage
    The stability of a liquid solution of LR3IGF-I was monitored for a period of two years at storage conditions of -20 C, +4 C, +22 C, and +37 C. The final concentration of LR3IGF-I was in acetic acid. At various time points, samples were taken and compared to a lyophilized control (stored at 4 C). Listed below are the stability results for each respective storage condition.

    Storage Condition: -20 C (-4 F)
    Biological Potency No Change up to 2 years
    Immunological Activity No Change up to 2 years
    Mobility of Protein No Change up to 2 years
    Elution Profile by reversed phased HPLC No Change up to 2 years

    Storage Condition: +4 C (39.2 F)
    Biological Potency No Change up to 2 years
    Immunological Activity No Change up to 2 years
    Mobility of Protein No Change up to 2 years
    Elution Profile by reversed phased HPLC No Change up to 2 years

    Storage Condition: +22 C (71.6 F)
    Biological Potency No Change up to 2 years
    Immunological Activity No Change up to 2 years
    Mobility of Protein No Change up to 2 years
    Elution Profile by reversed phased HPLC No Change up to 2 years

    Storage Condition: +37 C (98.6 F)
    Biological Potency No Change up to 1 year
    Immunological Activity No Change up to 1 year
    Mobility of Protein No Change up to 1 year
    Elution Profile by reversed phased HPLC No Change up to 1 year
    In conclusion
    There is no significant difference in the potency of LR3IGF-I associated with the storage of the liquid formulation when stored at this range of temperatures. There is no evidence for loss of biological activity at any of the tested temperatures when stored as a liquid product. As you can see IGF can be quite stable for even a year at room temp, but if you want to keep it around for a while stick it into the fridge. So IMO the best way to store LR3 that is suspended in BA is in the freezer. The BA wont allow it to freeze. And if you have it suspended in AA, store it in the fridge.
    :bb3:
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    Mine was shipped reconstituted, so its been bounced around in the mail. Its in a case in my gymbag... it gets tossed in the car, tossed around at the gym, and carried to work. Never had a problem with either vial.

    If your gonna toss it, I'll take it. I'll even pay the shipping charge.
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    Quote Originally Posted by RedwolfWV
    Mine was shipped reconstituted, so its been bounced around in the mail. Its in a case in my gymbag... it gets tossed in the car, tossed around at the gym, and carried to work. Never had a problem with either vial.

    If your gonna toss it, I'll take it. I'll even pay the shipping charge.
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    What is the source of this study? Was it published in one of the journals?
    Thanks,

    Buffdoc (science nerd)
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    That study he posted was conducted by Gropep International, which holds the patent on LR3 IGF-1. It is reputable.
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