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 422 of 2,187 · by category · by group · panels · answer lists · parts
Shagbark Hickory IgE Ab RAST class (qualitative) · Allergy 21329-8 Histoplasma capsulatum Ab (CSF, qualitative, immune diffusion (id)) · Microbiology 21330-6 HIV 1 p24 Ab (immunoblot) · Microbiology 21331-4 HIV 1 p41 Ab (immunoblot) · Microbiology 21332-2 HIV 1 RNA · Microbiology 21333-0 HIV 2 gp105 Ab (qualitative, immunoblot) · Microbiology 21334-8 HIV 2 gp120 Ab (qualitative, immunoblot) · Microbiology 21335-5 HIV 2 gp15 Ab (qualitative, immunoblot) · Microbiology 21336-3 HIV 2 gp34 Ab (qualitative, immunoblot) · Microbiology 21337-1 HIV 2 p31 Ab (qualitative, immunoblot) · Microbiology 21338-9 HIV 2 p55 Ab (qualitative, immunoblot) · Microbiology 21339-7 HIV 2 p58 Ab (qualitative, immunoblot) · Microbiology 21340-5 HLA-DR locus · HLA typing 21341-3 HLA-DR locus 2 · HLA typing 21342-1 HLA-DR+DQ · HLA typing 21343-9 House dust Greer IgG Ab RAST class (qualitative) · Allergy 21344-7 HTLV I+II Ab (CSF, qualitative, immunoblot) · Microbiology 21345-4 HTLV I+II Ab band pattern (CSF, immunoblot) · Microbiology 21346-2 HTLV I+II Ab band pattern (immunoblot) · Microbiology 21347-0 HTLV I+II IgG Ab (qualitative, immunoassay) · Microbiology 21348-8 IgA (CSF, qualitative, immunofixation) · Chemistry 21349-6 IgG (CSF, qualitative, immunofixation) · Chemistry 21350-4 IgM (CSF, qualitative, immunofixation) · Chemistry 21351-2 Intercellular substance IgG Ab (immunofluorescence) · Serology 21352-0 Western Juniper IgE Ab RAST class (qualitative) · Allergy 21353-8 Karaya gum IgE Ab RAST class (qualitative) · Allergy 21354-6 Ketones --2.5 hours post XXX challenge (Urine, qualitative) · Challenge tests 21355-3 Ketones --3.5 hours post XXX challenge (Urine, qualitative) · Challenge tests 21356-1 Ketones --1.5 hours post XXX challenge (Urine, qualitative) · Challenge tests 21357-9 Lactalbumin alpha IgG Ab RAST class (qualitative) · Allergy 21358-7 Beta galactosidase IgE Ab RAST class (qualitative) · Allergy 21359-5 Lamb IgG Ab RAST class (qualitative) · Allergy 21360-3 Laxatives present (Stool, screen method) · Drug and toxicology 21361-1 Legionella pneumophila IgG Ab (immunofluorescence) · Microbiology 21362-9 Legionella pneumophila DNA in Specimen (qualitative, naa with probe detection) · Microbiology 21363-7 Lemon IgG Ab RAST class (qualitative) · Allergy 21364-5 Leptin · Chemistry 21365-2 Lettuce IgG Ab RAST class (qualitative) · Allergy 21366-0 levoFLOXacin (disk diffusion (kb)) · Antibiotic susceptibility 21367-8 levoFLOXacin · Drug and toxicology 21368-6 Licorice IgE Ab RAST class (qualitative) · Allergy 21369-4 Lime IgG Ab RAST class (qualitative) · Allergy 21370-2 Lobster IgG Ab RAST class (qualitative) · Allergy 21371-0 Abnormal lymphocytes/Leukocytes (CSF, manual count) · Hematology and blood count 21372-8 Abnormal lymphocytes/Leukocytes (Synovial Fluid, manual count) · Hematology and blood count 21373-6 CD8+CD38+ cells (Blood) · Cell markers 21374-4 Kappa lymphocytes/Lymphocytes.lambda (Blood) · Cell markers 21375-1 Macadamia IgE Ab RAST class (qualitative) · Allergy 21376-9 Magnesium (Blood) · Chemistry 21377-7 Malathion (Urine) · Drug and toxicology 21378-5