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Title 42 Part 493 → Subpart K → §493.1264

Title 42 → Chapter IV → Subchapter G → Part 493 → Subpart K → §493.1264

Electronic Code of Federal Regulations e-CFR

Title 42 Part 493 → Subpart K → §493.1264

e-CFR data is current as of January 16, 2020

Title 42Chapter IVSubchapter GPart 493Subpart K → §493.1264


Title 42: Public Health
PART 493—LABORATORY REQUIREMENTS
Subpart K—Quality System for Nonwaived Testing


§493.1264   Standard: Parasitology.

(a) The laboratory must have available a reference collection of slides or photographs and, if available, gross specimens for identification of parasites and use these references in the laboratory for appropriate comparison with diagnostic specimens.

(b) The laboratory must calibrate and use the calibrated ocular micrometer for determining the size of ova and parasites, if size is a critical parameter.

(c) Each month of use, the laboratory must check permanent stains using a fecal sample control material that will demonstrate staining characteristics.

(d) The laboratory must document all control procedures performed, as specified in this section.