Quick answer: Choosing the right antibody or ELISA kit depends on matching species reactivity, assay sensitivity, and validation data to your specific protocol. BioMall.ai aggregates antibodies and ELISA kits from verified suppliers so researchers can compare datasheets and pricing before buying antibodies online in India or globally.
Primary vs Secondary Antibodies — What's the Difference?
A primary antibody binds directly to the target protein or antigen of interest, while a secondary antibody binds to the primary antibody and typically carries the detection label (fluorophore, enzyme, or biotin). Most workflows — Western blot, IHC, ELISA — need both, and buying them from the same validated lot where possible reduces batch-to-batch variability.
How to Select the Right ELISA Kit for Your Assay
- Assay format — sandwich ELISA for most proteins, competitive ELISA for small molecules and haptens
- Sensitivity range — check the kit's detection range (pg/mL to ng/mL) against your expected sample concentration
- Species cross-reactivity — confirm the kit is validated for your exact species (human, mouse, rat, etc.)
- Sample type compatibility — serum, plasma, cell culture supernatant, or tissue lysate
Checklist Before You Buy Antibodies Online
Before ordering, review the product datasheet for validation data (Western blot image, IHC staining, or flow cytometry histogram), confirm lot-to-lot consistency claims, and check the supplier's return or replacement policy if the antibody fails validation in your hands — a detail many buyers overlook until it's needed.
Sourcing Antibodies & ELISA Kits on BioMall.ai
Rather than contacting antibody suppliers one at a time, BioMall.ai lets you search catalogue numbers and target names across its antibodies, proteins and ELISA kits category, then send a single RFQ that reaches multiple verified distributors — useful when comparing pricing on antibodies supplied by more than one brand.
Frequently Asked Questions
What validation data should an antibody datasheet include?
Look for at least one application image (Western blot, IHC, or flow cytometry) along with the tested species, dilution range, and lot number used for validation.
Can I buy antibodies online in small pack sizes for a pilot study?
Yes, most antibody suppliers on BioMall.ai list small pack sizes (25 µl–100 µl) suitable for pilot experiments before scaling up.
How do I know if an ELISA kit will work with my sample type?
Check the kit's datasheet for validated sample types — serum, plasma, or cell culture supernatant — before ordering; cross-reactivity and matrix effects vary by kit.
Compare antibodies and ELISA kits from verified suppliers — browse the antibodies, proteins & ELISA kits category on BioMall.ai.