<Observation xmlns="http://hl7.org/fhir"><id value="f205"/><identifier><system value="https://intranet.aumc.nl/labvalues"/><value value="1304-03720-eGFR"/></identifier><status value="final"/><code><coding><system value="http://loinc.org"/><code value="33914-3"/><display value="Glomerular filtration rate [Volume Rate/Area] in Serum or Plasma by Creatinine-based formula (MDRD)/1.73 sq M"/></coding></code><subject><reference value="Patient/f201"/><display value="Roel"/></subject><issued value="2013-04-04T14:34:00+01:00"/><performer><reference value="Practitioner/f202"/><display value="Luigi Maas"/></performer><interpretation><text value="interpretation of results should be assigned based upon the level of kindey function"/></interpretation><note><text value="GFR estimating equations developed by the Modification of Diet in Renal Disease (MDRD) Study Group and the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI)...."/></note><method><coding><system value="http://snomed.info/sct"/><code value="702668005"/><display value="MDRD"/></coding></method><component><code><coding><system value="http://loinc.org"/><code value="48643-1"/><display value="Glomerular filtration rate [Volume Rate/Area] in Serum, Plasma or Blood by Creatinine-based formula (MDRD)/1.73 sq M among black population"/></coding></code><valueQuantity><value value="60"/><comparator value="&gt;"/><unit value="mL/min/1.73m2"/><system value="http://unitsofmeasure.org"/><code value="mL/min/{1.73_m2}"/></valueQuantity><referenceRange><low><value value="60"/><unit value="mL/min/1.73m2"/><system value="http://unitsofmeasure.org"/><code value="mL/min/{1.73_m2}"/></low><appliesTo><text value="non-black/african-american"/></appliesTo><age><low><value value="18"/><unit value="yrs"/><system value="http://unitsofmeasure.org"/><code value="a"/></low></age></referenceRange></component><component><code><coding><system value="http://loinc.org"/><code value="48642-3"/><display value="GFR/BSA pr.non blk SerPlBld MDRD-ArV"/></coding></code><valueQuantity><value value="60"/><unit value="mL/min/1.73m2"/><system value="http://unitsofmeasure.org"/><code value="mL/min/{1.73_m2}"/></valueQuantity><referenceRange><low><value value="60"/><unit value="mL/min/1.73m2"/><system value="http://unitsofmeasure.org"/><code value="mL/min/{1.73_m2}"/></low><age><low><value value="18"/><unit value="yrs"/><system value="http://unitsofmeasure.org"/><code value="a"/></low></age></referenceRange></component></Observation>