Definition for Code SystemSubstanceMeasurementTypeExample

<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="substance-measurement-type"/> 
  <meta> 
    <lastUpdated value="2026-06-23T16:20:19.822+00:00"/> 
  </meta> 
  <text> 
    <status value="generated"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p class="res-header-id">
        <b> Generated Narrative: CodeSystem substance-measurement-type</b> 
      </p> 
      <a name="substance-measurement-type"> </a> 
      <a name="hcsubstance-measurement-type"> </a> 
      <p> This case-sensitive code system 
        <code> http://hl7.org/fhir/substance-measurement-type</code>  defines the following codes:
      </p> 
      <table class="codes">
        <tr> 
          <td style="white-space:nowrap">
            <b> Code</b> 
          </td> 
          <td> 
            <b> Display</b> 
          </td> 
          <td> 
            <b> Definition</b> 
          </td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">ic50
            <a name="substance-measurement-type-ic50"> </a> 
          </td> 
          <td> IC50</td> 
          <td> Half maximal inhibitory concentration.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">ec50
            <a name="substance-measurement-type-ec50"> </a> 
          </td> 
          <td> EC50</td> 
          <td> Half maximal effective concentration.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">kd
            <a name="substance-measurement-type-kd"> </a> 
          </td> 
          <td> Kd</td> 
          <td> Equilibrium dissociation constant.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">ki
            <a name="substance-measurement-type-ki"> </a> 
          </td> 
          <td> Ki</td> 
          <td> Inhibition constant.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">km
            <a name="substance-measurement-type-km"> </a> 
          </td> 
          <td> Km</td> 
          <td> Michaelis constant.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">kon
            <a name="substance-measurement-type-kon"> </a> 
          </td> 
          <td> Kon</td> 
          <td> Association rate constant.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">koff
            <a name="substance-measurement-type-koff"> </a> 
          </td> 
          <td> Koff</td> 
          <td> Dissociation rate constant.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">mole-ratio
            <a name="substance-measurement-type-mole-ratio"> </a> 
          </td> 
          <td> Mole ratio</td> 
          <td> Ratio expressed in moles.</td> 
        </tr> 
        <tr> 
          <td style="white-space:nowrap">weight-ratio
            <a name="substance-measurement-type-weight-ratio"> </a> 
          </td> 
          <td> Weight ratio</td> 
          <td> Ratio expressed by weight (mass).</td> 
        </tr> 
      </table> 
    </div> 
  </text> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="brr"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="informative"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1"/> 
  </extension> 
  <url value="http://hl7.org/fhir/substance-measurement-type"/> 
  <version value="6.0.0-ballot4"/> 
  <name value="SubstanceMeasurementTypeExample"/> 
  <title value="Substance Measurement Type"/> 
  <status value="active"/> 
  <experimental value="true"/> 
  <date value="2026-06-23"/> 
  <publisher value="HL7 (FHIR Project)"/> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://hl7.org/fhir"/> 
    </telecom> 
    <telecom> 
      <system value="email"/> 
      <value value="fhir@lists.hl7.org"/> 
    </telecom> 
  </contact> 
  <description value="The kind of numeric measurement being recorded for a substance amount or relationship,
   e.g. IC50, Kd, mole ratio."/> 
  <jurisdiction> 
    <coding> 
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> 
      <code value="001"/> 
      <display value="World"/> 
    </coding> 
  </jurisdiction> 
  <caseSensitive value="true"/> 
  <valueSet value="http://hl7.org/fhir/ValueSet/substance-measurement-type"/> 
  <content value="complete"/> 
  <concept> 
    <code value="ic50"/> 
    <display value="IC50"/> 
    <definition value="Half maximal inhibitory concentration."/> 
  </concept> 
  <concept> 
    <code value="ec50"/> 
    <display value="EC50"/> 
    <definition value="Half maximal effective concentration."/> 
  </concept> 
  <concept> 
    <code value="kd"/> 
    <display value="Kd"/> 
    <definition value="Equilibrium dissociation constant."/> 
  </concept> 
  <concept> 
    <code value="ki"/> 
    <display value="Ki"/> 
    <definition value="Inhibition constant."/> 
  </concept> 
  <concept> 
    <code value="km"/> 
    <display value="Km"/> 
    <definition value="Michaelis constant."/> 
  </concept> 
  <concept> 
    <code value="kon"/> 
    <display value="Kon"/> 
    <definition value="Association rate constant."/> 
  </concept> 
  <concept> 
    <code value="koff"/> 
    <display value="Koff"/> 
    <definition value="Dissociation rate constant."/> 
  </concept> 
  <concept> 
    <code value="mole-ratio"/> 
    <display value="Mole ratio"/> 
    <definition value="Ratio expressed in moles."/> 
  </concept> 
  <concept> 
    <code value="weight-ratio"/> 
    <display value="Weight ratio"/> 
    <definition value="Ratio expressed by weight (mass)."/> 
  </concept> 
</CodeSystem>