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ASTM International - ASTM F2148-13

Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)

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Organization: ASTM International
Publication Date: 1 June 2013
Status: inactive
Page Count: 5
ICS Code (Medical microbiology): 07.100.10
significance And Use:

5.1 The propensity of a material to stimulate delayed contact hypersensitivity must be assessed before clinical application of devices containing this material. Delayed hypersensitivity may occur... View More

scope:

1.1 This practice provides a methodology to use an in-situ procedure for the evaluation of delayed contact hypersensitivity reactions.

1.2 This practice is intended to provide an alternative to the use of guinea pigs for evaluation of the ability of a device material to stimulate delayed contact hypersensitivity reactions. This alternative is particularly applicable for materials used in devices that contact only intact skin. However, the guinea pig maximization test is still the recommended method when assessing the delayed hypersensitivity response to metals or when testing substances that do not penetrate the skin but are used in devices that contact deep tissues or breached surfaces. This practice may be used for testing metals, with the exception of nickel-containing metals, unless the unique physicochemical properties of the materials may interfere with the ability of LLNA to detect sensitizing substances.

1.3 This practice consists of a protocol for assessing an increase in lymphocyte proliferation within the nodes draining the site of administration on the ears of mice.

1.4 The LLNA has been validated only for low-molecular-weight chemicals that can penetrate the skin. The absorbed chemical or metabolite must bind to macromolecules, such as proteins, to form immunogenic conjugates.

1.5 This practice is one of several developed for the assessment of the biocompatibility of materials. Practice F748 may provide guidance for the selection of appropriate methods for testing materials for a specific application.

1.6 Identification of a supplier of materials or reagents is for the convenience of the user and does not imply a single source. Appropriate materials and reagents may be obtained from many commercial supply houses.

1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

December 1, 2018
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use a combination of in vivio and in situ procedures for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to...
ASTM F2148-13
June 1, 2013
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use an in-situ procedure for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to provide an alternative to the...
October 1, 2012
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use an in-situ procedure for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to provide an alternative to the...
February 1, 2007
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use an in situ procedure for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to provide an alternative to the...
February 1, 2007
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use an in-situ procedure for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to provide an alternative to the...
November 1, 2006
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use an in situ procedure for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to provide an alternative to the...
October 1, 2006
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use an in situ procedure for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to provide an alternative to the...
October 10, 2001
Standard Practice for Evaluation of Delayed Contact Hypersensitivity Using the Murine Local Lymph Node Assay (LLNA)
1.1 This practice provides a methodology to use an in situ procedure for the evaluation of delayed contact hypersensitivity reactions. 1.2 This practice is intended to provide an alternative to the...
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