This assay has high sensitivity and excellent specificity for detecting Rat SDF1 (Stromal Cell Derived Factor 1). The assay range is from 0.156 to 10 ng/ml (Sandwich kit) with a sensitivity of 0.055 ng/ml. There is no detectable cross to reactivity with other relevant proteins. Activity loss rate and accelerated stability test ect have been conducted to guarantee the best performance of the products after long storage and delivery.

• High sensitivity and specificity
• Perfect reproducibility and consistency across batches
• Quality control with three-level inspections
• Wide range of targets/species available
• Intra-Assay: CV <10%, Inter-Assay: CV <12%

SDF-1 is small cytokine belonging to the chemokine family that is officially designated Chemokine (C-X-C motif) ligand 12 (CXCL12). SDF-1 is produced in two forms, SDF-1α/CXCL12a and SDF-1β/CXCL12b, by alternate splicing of the same gene. SDF-1β is synthesized as a 93 amino acid (aa) precursor that contains a 21 aa signal sequence and a 72 aa mature region. The mature molecule exhibits a typical three antiparallel β-strand chemokine-like fold. There are no potential N-linked glycosylation sites. N-terminal aa’s 1-8 form a receptor binding site, while aa’s 1 and 2 (Lys-Pro) are involved in receptor activation. The C-terminus is likely associated with heparin binding. SDF-1β circulates and undergoes proteolytic processing. SDF-1β are reported to be a monomers at neutral pH and physiologic ionic strength.