US · guidance
CMS SOM App. C, Tag D2160
§493.859 Standard: ABO group and D (Rho) typing
(e)(1) For any unsatisfactory testing event for reasons other than a failure to
participate, the laboratory must undertake appropriate training and employ the
technical assistance necessary to correct problems associated with a proficiency
testing failure.
(2) For any unacceptable analyte or unsatisfactory testing event score, remedial
action must be taken and documented, and the documentation must be maintained
by the laboratory for two years from the date of participation in the proficiency
testing event.
History
Rev. 233; Issued: 09-12-25; Effective: 09-12-25; Implementation: 09-12-25
Provenance
- Source
- cms.gov
- Retrieved
- 2026-07-22
- Edition
- som-2026-07-22
- Content hash
65b50b264e871f4523cb3ee61c5c2059e7d7c8a884f36f31570666f0a9952541
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