The provided source material pertains to a specific laboratory product: the Human desmosine (DES) ELISA Kit (Catalog # MBS702024) manufactured and sold by MyBioSource. This product is an enzyme-linked immunosorbent assay (ELISA) kit designed for the quantitative detection of native desmosine (DES) in biological samples. The source data focuses on the technical specifications, purchasing options, and promotional offers associated with this kit, rather than on free sample programmes, consumer freebies, or no-cost trials in the traditional sense for UK consumers. Consequently, the information available is limited to the commercial and technical details provided by the manufacturer.
The kit is intended for scientific laboratory research purposes and is not for diagnostic, therapeutics, prophylactic, or in vivo use. It is sold as a ready-to-use microwell, strip plate ELISA kit. The assay principle involves a quantitative sandwich enzyme immunoassay technique. Antibody specific for DES is pre-coated onto a microplate. Standards and samples are added, and any DES present is bound by the immobilised antibody. After washing, a biotin-conjugated antibody specific for DES is added, followed by an avidin-conjugated horseradish peroxidase (HRP). A substrate solution is then added, and colour development is measured, with intensity proportional to the amount of DES bound.
Appropriate sample types for this kit may include undiluted body fluids, tissue homogenates, and secretions. The kit includes standards or positive controls to establish a concentration gradient, rendering a theoretical detection range for biological research samples containing desmosine. Quality control assays have been conducted to assess reproducibility, with intra-assay and inter-assay CV (coefficient of variation) percentages identified.
Regarding availability and purchase, the source data lists specific unit prices and promotional offers for different kit formats. It is important to note that these are commercial purchase options, not free samples. The promotional offer mentioned is a 5% discount on the web price for the 96-Strip-Wells, 5x96-Strip-Wells, and 10x96-Strip-Wells kits. This discount is applied after the order has been placed. Additionally, certain kit formats come with free USB drives: the 24-Strip-Wells kit includes one free 8GB USB, the 48-Strip-Wells kit includes one free 8GB USB, the 96-Strip-Wells kit includes one free 8GB USB, the 5x96-Strip-Wells kit includes three free 8GB USBs, and the 10x96-Strip-Wells kit includes seven free 8GB USBs.
The source material specifies that the product is for "Research Use Only" and is not intended for diagnostic purposes. MyBioSource reserves the right to refuse orders where they reasonably believe the intended use falls outside of their acceptable guidelines. The company also states that while efforts are made to ensure accuracy, they will not be liable for any omissions or errors in the provided datasheet.
Shipping considerations are mentioned briefly. Certain products may require shipping with dry ice, and an additional dry ice fee may apply. The source also notes that small volumes of the kit vial may occasionally become entrapped in the seal during shipment and storage, and recommends briefly centrifuging the vial on a tabletop centrifuge to dislodge any liquid in the container's cap.
For UK-based researchers or laboratories interested in this product, the source indicates that the format of the assay is important. It is recommended to request the current manual or contact MyBioSource's technical support team with a presales inquiry before placing an order to confirm the current details of the assay. The online manual is intended as an example only, and precise details are provided in the instructions for use with the assay kit.
In summary, the provided source data does not contain information about free samples, promotional offers, no-cost product trials, brand freebies, or mail-in sample programmes for UK consumers in categories like beauty, baby care, pet food, health, food & beverage, or household goods. The material is exclusively focused on a specific laboratory research kit, its technical specifications, and its commercial purchase options. There is no indication of a free sample programme for this ELISA kit or any related consumer products. The promotional element is a discount on purchase, not a free product trial.