WAP four-disulfide core domain protein 2 - also known as Human Epididymis Protein 4(HE4) - is a protein that in humans is encoded by the WFDC2 gene.HE4 is a tumor marker of ovarian cancer, with 80% sensitivity at a cut-off of 150 pmol/L.

The antibody is stable for at least 1 year from the date of receipt when stored at -20^°C to -70^°C. Reconstituted antibody can also be aliquotted and stored at 4^°C for 1 month or at -20^°C to -70^°C in a manual defrost freezer for many months without detectable loss activity. Please avoid freeze-thaw cycles.