Goat Anti-Rabbit IgG H&L (Alkaline Phosphatase) (ab6722)

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Just as with a common indirect ELISA it is important to stop the reaction using the appropriate stop solution.

I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

I am not aware of any cross reactivity of this antibody with human Ig. However we do offer a number of secondary antibodies which are designed to reduce background levels by either being pre-absorbed against other proteins and Igs or by digestion into F(ab) and Fc fragments. I've included links to a few of those below.

That said I do not feel that the background you are experiencing should be the cause for the type of response you have been seeing. This is usually something that can be easily subtracted from your results if you run 2 or 3 wells with this control as a baseline.

Another possibility is that it could be that the dilution buffer you are using is somehow causing this reaction. What buffer are you using? Have you tried using filtering this or using another buffer?

I hope that this information is helpful. Please let me know if you have any questions or there are other ways that Abcam may help you meet your research goals.

These are links to the antibodies that have been pre-absorbed:

https://www.abcam.com/Goat-polyclonal-Secondary-Antibody-to-Rabbit-IgG-H-L-Alkaline-Phosphatase-pre-adsorbed-ab97072.html

https://www.abcam.com/Goat-polyclonal-Secondary-Antibody-to-Rabbit-IgG-H-L-Alkaline-Phosphatase-pre-adsorbed-ab97072.html

https://www.abcam.com/Goat-F-ab-2-polyclonal-Secondary-Antibody-to-Rabbit-IgG-H-L-AP-pre-adsorbed-ab98469.html

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After reviewing your email, I am lead to believe that this really is a hook effect as you had mentioned. I am not an expert on this hook effect in plasma specifically, and so cannot comment on the 100 fold dilutions usually required, but your description does sound like a hook effect. These should eventually tail off with further dilutions.

The hook effect may also be created by overcoating with primary antibody; you may wish to further dilute your primary to tackle this as well.

I hope these suggestion help. Let me know if you have any questions.

Thank you for contacting us, I am glad to hear that the new product is working well for you.

Usually when color is developing slowly it is one of three issues. 1) the plates and reagents have not come to room temperature. 2) the conjugates are weak, try to prepare these right before use and at correct concentration 3) the presence of peroxidases, azide or other contaminants are interfering with the reaction, these may be removed by dyalisis, gel filtration or with purification columns.

I hope that this information is helpful. Please let me know if you have any questions or there are other ways that Abcam may help you meet your research goals.

Thank you for contacting Abcam.

Enzymatic detection with an antibody that has been conjugated to HRP or to AP is a widely used and robust method. As this target is located on the peroxisome membrane I would recommend using anAlkaline Phosphataseconjugated secondary for this target prehaps ab6722,Goat polyclonal Secondary Antibody to Rabbit IgG - H&L (AP). Followed by an appropriate substrate detection of your choice. I recommend theAlkaline Phosphatase chromogen (BCIP/NBT). We do offer this as a ready to use product, ab7468.

I hope you have found this information helpful. Please let me know if you have any questions. I have places links to each of the products I have mentioned here below.

Ab6722:https://www.abcam.com/Goat-polyclonal-Secondary-Antibody-to-Rabbit-IgG-H-L-AP-ab6722.html

Ab7468:https://www.abcam.com/Alkaline-Phosp

Thank you for your reply. I have sent a free vial of ab34767 to replace ab28664. I am sorry this product did not perform as stated on the datasheet and for the inconvenience this has caused. To check the status of the order please contact our Customer Service team and reference this number. Please note that this free of charge replacement vial is also covered by our Abpromise guarantee. Should you still be experiencing difficulties, or if you have any further questions, please do not hesitate to let us know. I have also issued a credit note for ab6722. The credit note may be used in one of the following ways: (1) Redeemed against the original invoice if this hasn't already been paid. (2) Held on the account for use against a future order. (3) A full refund can be offered where no other invoices are outstanding. Please contact your Finance department to confirm how you would like the credit note to be used and ensure it is not redeemed without your knowledge. To specifically receive a refund please ask your Finance department to contact our Finance department at creditcontrol@abcam.com or by telephone using the information at the “Contact Us” link in the top right corner of our website. The credit note ID is for your reference only, please refer to the credit note ID in any correspondence with our accounting department. We will send you the completed credit note by email or postal mail with the actual credit note number which will start with the letters CGB. I hope this experience will not prevent you from purchasing other products from us in the future. Our Scientific Support team is always at your service should you require further expert advice