• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v2-0369 version 2.2.0

  Code	Display	Definition
  B	Blind Sample	Used to test the validity of the measurement process, where the composition of the sample is unknown except to the person submitting it.
  C	Calibrator	Used for initial setting of calibration of the instrument.
  E	Electronic QC	Used with manufactured reference providing signals that simulate QC results
  F	Filler Organization Proficiency	Specimen used for testing proficiency of the organization performing the testing (Filler).
  G	Group	Used when solid specimens consist of multiple individual elements that are not individually identified but can be separated again into the original specimens. The identifiers of the original specimens may be tracked.
  H	Historical Specimen	This identifies a parent specimen to the specimen that is submitted for testing
  L	Pool	Used when aliquots of liquid individual specimens are combined to form a single specimen representing all of the components that are not individually identified. The identifiers of the original specimens may be tracked.
  O	Operator Proficiency	Specimen used for testing Operator Proficiency.
  P	Patient	Used for any patient sample.
  Q	Control specimen	Used when specimen is the control specimen (either positive or negative).
  R	Replicate (of patient sample as a control)	Used when a patient sample is re-run as a control for a repeat test.
  V	Verifying Calibrator	Used for periodic calibration checks.

This value set expansion contains 12 concepts.