StabilGuard® Immunoassay Stabilizer (BSA-Free)

Use StabilGuard® Immunoassay Stabilizer (BSA-Free) to maintain the activity of antibodies and other biomolecules adsorbed or immobilized to solid substrates, and as an effective blocking agent. StabilGuard stabilizer utilizes a completely synthetic formulation to eliminate background issues.

  • Easily incorporate StabilGuard stabilizer into most assay protocols in place of your blocking solution.
  • Effective blocking requires minimal incubation. For blocking nonspecific sites on hydrophobic substrates, incubate for as little as five minutes and then proceed with your assay. Longer incubation times, while not necessary, are also not detrimental.
  • For simultaneous blocking and stabilizing, apply StabilGuard stabilizer and incubate. Remove excess solution and completely dry the component. For maximum shelf life, store the stabilized component in a sealed container with desiccant.
Product Code

SG01 - StabilGuard® Immunoassay Stabilizer (BSA-Free)
Available Sizes

50 mL sample, 1000 mL
Storage

Product should be refrigerated or stored at room temperature.
Bovine Protein

No
Dry Weight (g/mL)

0.057 - 0.066
Product Buffer

PBS
pH

6.6 - 7.2
Preservative

StabilGuard stabilizer is filtered through a 0.1 micron filter; if desired, a preservative may be added. SurModics recommends the use of ProClin™ preservative at the concentration recommended by the manufacturer of the ProClin.
Shelf Life

3 years
Stability Data

Stability tests were performed with StabilGuard stabilizer using either rabbit monoclonal or polyclonal IgG antibodies (see graph below ). Coated microtiter plates were stabilized with either StabilGuard stabilizer or 1% BSA. The antibody-coated plates were dried and placed at room temperature. Percent retained activity was determined by comparing the activity of the aged antibody-coated microtiter plates to that of freshly coated plates. After 30 months in StabilGuard stabilizer at room temperature, the monoclonal antibody retained greater than 85% activity and the polyclonal antibody retained 90% activity.

 Product Brochure:  "SurModics Immunoassay Stabilizers"

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StabilGuard® Immunoassay Stabilizer (BSA-Free)