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ASTM F2148-01

Historical Revision

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

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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. The guinea pig maximization test should be used for these 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 F 748 may provide guidance for the selection of appropriate methods for testing materials for a specific application.

1.6 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.

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


SDO ASTM: ASTM International
Document Number F2148
Publication Date Oct. 10, 2001
Language en - English
Page Count 5
Revision Level 01
Supercedes
Committee F04.16
Publish Date Document Id Type View
Dec. 1, 2018 F2148-18 Revision
June 1, 2013 F2148-13 Revision
Feb. 1, 2007 F2148-07E01 Revision
Feb. 1, 2007 F2148-07 Revision
Nov. 1, 2006 F2148-06A Revision
Oct. 1, 2006 F2148-06 Revision
Oct. 10, 2001 F2148-01 Revision
Oct. 1, 2012 F2148-07R12 Reaffirmation