Work with LifeSpan to design a custom immunohistochemistry to address your specific biological question. Outsource the entire localization process without having to
worry about finding and characterizing target specific antibodies, sourcing and validating difficult-to-find tissues, and having the ability to interpret the resulting
immunostaining in relation to complex human pathologies.
TCR Screening Services
Test your therapeutic antibodies in immunohistochemistry against a broad panel of normal frozen human tissue types in order to determine potential unintended binding.
Our non-GLP TCR services are designed on the FDA recommendation outlined in their "Points to Consider in the Manufacture and Testing of Monoclonal Antibody Products for Human Use".
Cross Reactivity: This ELISA kit shows no cross-reactivity with any of the cytokines tested: Ghrelin, Nesfatin, Angiotensin II, NPY and APC.
LS-F415 is a 96-well enzyme-linked immunosorbent assay (ELISA) for the Quantitative detection of Human RBP4 in samples of Cell Culture Supernatants and Serum. It is based upon a Competitive EIA assay principle and can be used to detect levels of RBP4 as low as 0.1 nanograms per millilter.
Cell Culture Supernatants, Serum
Colorimetric - 450nm (TMB)
0.1 - 1000 ng/ml
Intra-Assay: CV<10% Inter-Assay: CV<15%
Due to their limited shelf life, LSBio ELISA kits are not typically stocked as finished goods. Upon receipt of an order each kit is assembled and tested to ensure that it meets specifications before shipping. Minor changes may occur to the Range, Sensitivity, and Precision. In the event of a significant change the order would be confirmed with the customer before shipping ELISA kit lot numbers reflect the date of final assembly and testing for each specific kit rather than a bulk manufactured lot. All kits are tested to confirm that they fall within their defined Inter- and Intra- assay coefficient of variation.
Coated 96-well Strip Plate
Wash Buffer (20x)
Capture Antibody (Lyophilized)
Assay Diluent A
Assay Diluent B (5x)
Biotinylated Peptide (Lyophilized)
Adhesive Plate Sealers
Standard, Biotinylated RBP4 peptide, and Positive Control should be stored at -20°C or -80°C (recommended at -80°C) after arrival. Avoid multiple freeze-thaws. The remaining kit components may be stored at -20°C. Opened Microplate Wells and antibody (Item N) may be stored for up to 1 month at 2° to 8°C. Return unused wells to the pouch containing desiccant pack and reseal along entire edge. If stored in this manner, Lifespan warranties this kit for 6 months from the date of shipment.
RBP4 ElisaKit, PRBP ElisaKit, Plasma retinol-binding protein ElisaKit, RBP ElisaKit, Retinol-binding protein 4 ElisaKit
RBP4 belongs to the lipocalin family and is the specific carrier for retinol (vitamin A alcohol) in the blood. It delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin which prevents its loss by filtration through the kidney glomeruli. A deficiency of vitamin A blocks secretion of the binding protein posttranslationally and results in defective delivery and supply to the epidermal cells.