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 54 of 2,187 · by category · by group · panels · answer lists · parts
NADH dehydrogenase · Chemistry 2651-8 NADH dehydrogenase (Red Blood Cells) · Chemistry 2652-6 Cytochrome B5 reductase (Red Blood Cells) · Chemistry 2653-4 Neurophysin · Chemistry 2654-2 Neurotensin · Chemistry 2655-9 Niacin in 24 hour Urine · Chemistry 2656-7 Nitrite (Urine) · Chemistry 2657-5 Nitrogen in Exhaled gas · Chemistry 2658-3 Nitrogen · Chemistry 2659-1 Nitrogen in 24 hour Urine · Chemistry 2660-9 Nitrogen.nonprotein (Blood, qualitative) · Chemistry 2661-7 Nitrogen.nonprotein (Blood) · Chemistry 2662-5 Nitrogen.nonprotein · Chemistry 2663-3 Nitrogen 24H Stl Qn · Chemistry 2664-1 Nitrogen (Urine) · Chemistry 2665-8 Norepinephrine · Chemistry 2666-6 Norepinephrine (Urine) · Chemistry 2667-4 Norepinephrine in 24 hour Urine · Chemistry 2668-2 Normetanephrine · Chemistry 2669-0 Normetanephrine (Urine) · Chemistry 2670-8 Normetanephrine in 24 hour Urine · Chemistry 2671-6 Octopamine (Urine) · Chemistry 2672-4 Oleate (C18:1w9) · Chemistry 2673-2 Ornithine (qualitative) · Chemistry 2674-0 Ornithine · Chemistry 2675-7 Organic acids (Urine, qualitative) · Chemistry 2676-5 Organochloride (Blood) · Drug and toxicology 2677-3 Ornithine (qualitative) · Chemistry 2678-1 Ornithine · Chemistry 2679-9 Ornithine (Urine) · Chemistry 2680-7 Ornithine in 24 hour Urine · Chemistry 2681-5 Ornithine carbamoyltransferase (Amniotic Fluid) · Chemistry 2682-3 Ornithine carbamoyltransferase · Chemistry 2683-1 Alpha-1-acid glycoprotein (CSF) · Chemistry 2684-9 Alpha-1-acid glycoprotein · Chemistry 2685-6 Orotate (Urine) · Chemistry 2686-4 Orotate phosphoribosyltransferase · Chemistry 2687-2 Orotidine-5'-Phosphate decarboxylase · Chemistry 2688-0 Osmolality (Amniotic Fluid) · Chemistry 2689-8 Osmolality (Pleural Fluid) · Chemistry 2690-6 Osmolality (Peritoneal Fluid) · Chemistry 2691-4 Osmolality · Chemistry 2692-2 Osmolality (Stool) · Chemistry 2693-0 Osmolality of 24 hour Urine · Chemistry 2694-8 Osmolality (Urine) · Chemistry 2695-5 Osmolality of Specimen · Chemistry 2696-3 Osteocalcin · Chemistry 2697-1 Osteonectin · Chemistry 2698-9 Oxalate · Chemistry 2699-7 Oxalate (Urine) · Chemistry 2700-3