42 CFR § 493.1242 - Standard: Specimen submission, handling, and referral.
(a) The laboratory must establish and follow written policies and procedures for each of the following, if applicable:
(1) Patient preparation.
(2) Specimen collection.
(4) Specimen storage and preservation.
(5) Conditions for specimen transportation.
(6) Specimen processing.
(7) Specimen acceptability and rejection.
(8) Specimen referral.
(b) The laboratory must document the date and time it receives a specimen.
(d) If the laboratory accepts a referral specimen, written instructions must be available to the laboratory's clients and must include, as appropriate, the information specified in paragraphs (a)(1) through (a)(7) of this section.