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 419 of 2,187 · by category · by group · panels · answer lists · parts
Cream Cheese IgE Ab RAST class (qualitative) · Allergy 21179-7 Roquefort Cheese IgE Ab RAST class (qualitative) · Allergy 21180-5 Cherry IgG Ab RAST class (qualitative) · Allergy 21181-3 Chicken IgG Ab RAST class (qualitative) · Allergy 21182-1 Chicken meat IgG Ab RAST class (qualitative) · Allergy 21183-9 Chlamydophila pneumoniae in Specimen (qualitative, organism specific culture) · Microbiology 21184-7 Chlamydia sp IgG Ab (qualitative) · Microbiology 21185-4 Chlamydia sp IgM Ab (qualitative) · Microbiology 21186-2 Chlamydia trachomatis DNA in Conjunctival specimen (qualitative, naa with probe detection) · Microbiology 21187-0 Chlamydia trachomatis rRNA in Conjunctival specimen (qualitative, probe) · Microbiology 21188-8 Chlamydia trachomatis DNA in Cervical mucus (qualitative, naa with probe detection) · Microbiology 21189-6 Chlamydia trachomatis DNA in Cervix (qualitative, naa with probe detection) · Microbiology 21190-4 Chlamydia trachomatis DNA in Urethra (qualitative, naa with probe detection) · Microbiology 21191-2 Chlamydia trachomatis rRNA in Urethra (qualitative, probe) · Microbiology 21192-0 chlordiazePOXIDE+Norchlordiazepoxide · Drug and toxicology 21193-8 Chloride in 24 hour Urine · Chemistry 21194-6 Chlorzoxazone (Urine) · Drug and toxicology 21195-3 Chocolate IgG Ab RAST class (qualitative) · Allergy 21196-1 Cholesterol esters/Cholesterol.total · Chemistry 21197-9 Choriogonadotropin.beta subunit · Chemistry 21198-7 Chromium (Body Fluid) · Drug and toxicology 21199-5 Chromium in Nail · Drug and toxicology 21200-1 Chromium in 24 hour Urine · Drug and toxicology 21201-9 Cinnamon IgG Ab RAST class (qualitative) · Allergy 21202-7 Citrate in 24 hour Urine · Chemistry 21203-5 Clam IgG Ab RAST class (qualitative) · Allergy 21204-3 Clove IgG Ab RAST class (qualitative) · Allergy 21205-0 Sweet Clover IgE Ab · Allergy 21206-8 CCR5 gene mutations found (Blood, molecular genetics method nominal) · Molecular pathology, mutations 21207-6 Cobalt in 24 hour Urine · Drug and toxicology 21208-4 Coccidioides immitis Ab (CSF, qualitative, immune diffusion (id)) · Microbiology 21209-2 Cockatiel droppings IgE Ab RAST class (qualitative) · Allergy 21210-0 Cockatiel feather IgE Ab RAST class (qualitative) · Allergy 21211-8 Coconut IgG Ab RAST class (qualitative) · Allergy 21212-6 Codfish IgG Ab RAST class (qualitative) · Allergy 21213-4 Coffee IgG Ab RAST class (qualitative) · Allergy 21214-2 Collagen crosslinked N-telopeptide · Chemistry 21215-9 Collagen crosslinked N-telopeptide/Creatinine in 24 hour Urine · Chemistry 21216-7 Complement C4d (Plasma) · Hematology and blood count 21217-5 Complement total hemolytic CH50 (CSF) · Hematology and blood count 21218-3 Copper in 24 hour Urine · Drug and toxicology 21219-1 Cilantro IgE Ab RAST class (qualitative) · Allergy 21220-9 Corn IgG Ab RAST class (qualitative) · Allergy 21221-7 Cortisol --11 PM specimen · Challenge tests 21222-5 Cortisol --1st specimen post XXX challenge · Challenge tests 21223-3 Cortisol --2 hours post XXX challenge · Challenge tests 21224-1 Cortisol --3 hours post XXX challenge · Challenge tests 21225-8 Cortisol --4 PM specimen · Challenge tests 21226-6 Cotton linters IgE Ab RAST class (qualitative) · Allergy 21227-4 Cottonseed IgG Ab RAST class (qualitative) · Allergy 21228-2