US · guidance
CMS SOM App. C, Tag D5539
§493.1267 Standard: Routine chemistry
(c) Test one sample of control material each time specimens are tested unless
automated instrumentation internally verifies calibration at least every 30 minutes.
Interpretive Guidelines §493.1267(c)
If blood gas analysis is performed with an instrument that does not internally verify the
calibration at least every thirty minutes, then a calibrator or control must be tested each
time patient specimens are tested. It is not the intent of this requirement to require the
laboratory to maintain records of each auto-calibration.
§493.1267 Standard: Routine chemistry.
(d) Document all control procedures performed, as specified in this section.
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
8b522727da3ace7885b6e819d349e7b3cf354b5d138c9bb550cee70d6c10d8c6
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