Phosphate-buffered solution, pH 7.4, with stabilizer
Protein Concentration
0.5 mg/mL
Storage&Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
Recommended Usage
For flow cytometric staining, it is recommended to use 5 uL of this reagent per 0.5-1.0 million cells in a 100 µL volume. Optimal reagent performance should be determined by titration for each specific application. FITC has an excitation max at 493 nm and an emission max at 525 nm.
Excitation Laser
Blue Laser (488 nm) Green/Yellow laser (532/561nm)
The HA tag (hemagglutinin tag) is a short linear epitope (YPYDVPDYA) derived from amino acids 98–106 of influenza A hemagglutinin. With a molecular weight of approximately 1.1 kDa, it is commonly fused to the N- or C-terminus of recombinant proteins to facilitate detection, localization, and purification when protein-specific antibodies are unavailable. Anti-HA tag antibodies specifically recognize the HA epitope and are widely used in applications such as western blotting, immunoprecipitation, immunofluorescence, immunohistochemistry, and intracellular flow cytometry to study protein expression, topology, and protein–protein interactions.
How do I determine the optimal antibody concentration/titer for my experiment?
We recommend titrating each new antibody lot on your own cell type and instrument, since optimal concentration depends on cell density, target expression level, and cytometer sensitivity. Suggested starting dilutions or test sizes (e.g., µg or µl per 10^6 cells) are provided on the product page as a starting reference point, not a fixed requirement.
Can these antibodies be used for intracellular or intranuclear staining, or only surface staining?
Intended use (surface, intracellular, or both) is specified per product, indicated under Application. The appropriate Related Protocol is linked for each product. If you need to detect both surface and intracellular markers in the same panel, confirm each antibody's compatibility with your fixation/permeabilization protocol before combining them.
What controls should I use alongside these antibodies?
Matched isotype controls (same host species, isotype, and conjugate) are available for most clones to help distinguish specific binding from background/non-specific staining and are linked on each product page. Unstained, single-color compensation, and fluorescence-minus-one (FMO) controls are also recommended, especially for multicolor panel design.
Can I combine InnoCyto Flow Cytometry antibodies into a multicolor panel?
Yes — antibodies across our catalog are designed to be panel-compatible, and conjugate options are offered specifically to support multiplexing. When building a panel, pair bright fluorophores with low-expression targets, avoid excessive spectral overlap, and confirm compensation is set up correctly for your specific fluorochrome combination. Use our Panel Builder to simplify the process.
Have a product or application question? Consult our FAQs or contact us.
