((a)) ** In general** The Secretary shall issue certificates of accreditation to laboratories that meet the requirements of this chapter, as determined by the Secretary.
((b)) ** Requirements for accreditation** To receive accreditation under this chapter, a laboratory shall prepare and submit an application for accreditation to the Secretary and shall complete such required tests, and meet such standards as established under .section 138a of this title
((c)) ** Failure to meet accreditation standards** The Secretary shall deny an application for accreditation or shall revoke any existing accreditation with respect to any laboratory that fails to meet the requirements for accreditation under this chapter.
((d)) ** Limited accreditation** The Secretary may issue certificates of accreditation to laboratories that are limited to specific fields of testing.