LOINC codes
The universal code system for lab observations. Every biomarker on this site is anchored to a LOINC code; a code page says what its parts mean.
By class
435 classes · the 32 with 500 codes or more Microbiology · MICRO 14,888 Chemistry · CHEM 10,855 Drug and toxicology · DRUG/TOX 8,921 Radiology · RAD 7,440 Allergy · ALLERGY 6,024 Challenge tests · CHAL 3,964 Document ontology · DOC.ONTOLOGY 3,759 PhenX measures · PHENX 3,686 Serology · SERO 3,167 Lab orders · LABORDERS.ONTOLOGY 2,546 PROMIS survey · SURVEY.PROMIS 2,463 Hematology and blood count · HEM/BC 2,449 Antibiotic susceptibility · ABXBACT 2,115 Cell markers · CELLMARK 1,746 General health survey · SURVEY.GNHLTH 1,629 Molecular pathology, mutations · MOLPATH.MUT 1,293 Blood bank · BLDBK 1,113 Coagulation · COAG 1,002 CMS survey · SURVEY.CMS 968 History and physical · H&P.HX 901 Pulmonary · PULM 878 PANEL.SURVEY.CMS 866 MDS survey · SURVEY.MDS 864 Cardiac ultrasound · CARD.US 817 Obstetric ultrasound · OB.US 793 Pathology · PATH 707 Molecular pathology · MOLPATH 704 PANEL.PHENX 704 Urinalysis · UA 597 HLA typing · HLA 526 H&P.PX 507 CLIN 502
All codes, by number
109,325 codes · page 41 of 2,187 · by category · by group · panels · answer lists · parts
Calcium in 24 hour Stool · Chemistry 2001-6 Calcium (Stool) · Chemistry 2002-4 Calcium (qualitative) · Chemistry 2003-2 Calcium (Urine) · Chemistry 2004-0 Calcium in 2 hour Urine --12 hours fasting · Challenge tests 2005-7 Cancer Ag 125 (qualitative) · Chemistry 2006-5 Cancer Ag 15-3 (qualitative) · Chemistry 2007-3 Cancer Ag 19-5 (qualitative) · Chemistry 2008-1 Cancer Ag 19-9 (qualitative) · Chemistry 2009-9 Cancer Ag 19-9 (qualitative) · Chemistry 2010-7 Cancer Ag 242 (qualitative) · Chemistry 2011-5 Cancer Ag 27-29 (qualitative) · Chemistry 2012-3 Cancer Ag 50 (qualitative) · Chemistry 2013-1 Cancer Ag 549 (qualitative) · Chemistry 2014-9 Cancer Ag 72-4 (qualitative) · Chemistry 2015-6 Carbamoyl phosphate synthetase · Chemistry 2016-4 Carbamoyl phosphate synthetase (ammonia) (Tissue) · Chemistry 2017-2 Carbon dioxide (Amniotic Fluid) · Chemistry 2018-0 Carbon dioxide (Arterial Blood) · Chemistry 2019-8 Carbon dioxide (Capillary Blood) · Chemistry 2020-6 Carbon dioxide (Venous Blood) · Chemistry 2021-4 Carbon dioxide (CSF) · Chemistry 2022-2 Carbon dioxide (Body Fluid) · Chemistry 2023-0 Carbon dioxide dissolved · Chemistry 2024-8 Carbon dioxide dissolved (Red Blood Cells) · Chemistry 2025-5 Carbon dioxide, total (Arterial Blood) · Chemistry 2026-3 Carbon dioxide, total (Venous Blood) · Chemistry 2027-1 Carbon dioxide, total · Chemistry 2028-9 Carboxyhemoglobin (qualitative) · Chemistry 2029-7 Carboxyhemoglobin/Hemoglobin.total (Arterial Blood) · Chemistry 2030-5 Carboxyhemoglobin/Hemoglobin.total (Capillary Blood) · Chemistry 2031-3 Carboxyhemoglobin/Hemoglobin.total (Venous Blood) · Chemistry 2032-1 Carbonate (Arterial Blood) · Chemistry 2033-9 Carbonate (Venous Blood) · Chemistry 2034-7 Carbonate · Chemistry 2035-4 Carbonate dehydratase (Red Blood Cells) · Chemistry 2036-2 Carcinoembryonic Ag (CSF) · Chemistry 2037-0 Carcinoembryonic Ag (Semen) · Chemistry 2038-8 Carcinoembryonic Ag · Chemistry 2039-6 Cardiolipin · Coagulation 2040-4 Carnitine acyltransferase · Chemistry 2041-2 Carnitine free (C0) (qualitative) · Chemistry 2042-0 Carnitine free (C0) · Chemistry 2043-8 Carnitine (Semen) · Chemistry 2044-6 Carnitine (qualitative) · Chemistry 2045-3 Carnitine · Chemistry 2046-1 Carnitine (Urine) · Chemistry 2047-9 Carnitine/Creatinine · Chemistry 2048-7 Carnosine (qualitative) · Chemistry 2049-5 Carnosine · Chemistry 2050-3