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 49 of 2,187 · by category · by group · panels · answer lists · parts
Guanine deaminase · Chemistry 2401-8 Guanosine monophosphate.cyclic · Chemistry 2402-6 Hemopexin · Chemistry 2403-4 Hemopexin (Urine) · Chemistry 2404-2 Heparan sulfate (Urine, qualitative) · Chemistry 2405-9 Heparan sulfate (Urine) · Chemistry 2406-7 Heptacarboxylporphyrin (Urine) · Chemistry 2407-5 Hexachlorophene (Blood) · Drug and toxicology 2408-3 Hexokinase · Chemistry 2409-1 Hexokinase (Red Blood Cells) · Chemistry 2410-9 Hexokinase 1/Hexokinase.total (Red Blood Cells) · Chemistry 2411-7 Hexokinase 3/Hexokinase.total (Red Blood Cells) · Chemistry 2412-5 Hippuran renal clearance in 24 hour Urine and Serum or Plasma · Chemistry 2413-3 Hippurate in 24 hour Urine · Drug and toxicology 2414-1 Histamine (Blood) · Chemistry 2415-8 Histamine · Chemistry 2416-6 Histamine (Urine) · Chemistry 2417-4 Histidine (Blood, qualitative) · Chemistry 2418-2 Histidine (Blood) · Chemistry 2419-0 Histidine · Chemistry 2420-8 Histidine (qualitative) · Chemistry 2421-6 Histidine (Urine, qualitative) · Chemistry 2422-4 Histidine (Urine) · Chemistry 2423-2 Histidine in 24 hour Urine · Chemistry 2424-0 Histidine ammonia lyase · Chemistry 2425-7 Homocarnosine (CSF) · Chemistry 2426-5 Homocitrulline (Urine) · Chemistry 2427-3 Homocysteine · Chemistry 2428-1 Homocystine (qualitative) · Chemistry 2429-9 Homocystine · Chemistry 2430-7 Homocystine (Urine) · Chemistry 2431-5 Homogentisate (Urine, qualitative) · Chemistry 2432-3 Homogentisate (Urine) · Chemistry 2433-1 Homovanillate (CSF) · Chemistry 2434-9 Homovanillate · Chemistry 2435-6 Homovanillate in 24 hour Urine · Chemistry 2436-4 Hydrogen/Expired gas in Exhaled gas --post 50 g glucose PO · Challenge tests 2437-2 Hydrogen sulfide (qualitative) · Chemistry 2438-0 Hydroxycalcidiol · Chemistry 2439-8 Hydroxocobalamin · Chemistry 2440-6 Hydroxylysine (qualitative) · Chemistry 2441-4 Hydroxylysine · Chemistry 2442-2 Hydroxylysine (Urine) · Chemistry 2443-0 Hydroxymethylglutaryl CoA lyase · Chemistry 2444-8 Hydroxyproline (qualitative) · Chemistry 2445-5 Hydroxyproline · Chemistry 2446-3 Hydroxyproline in 24 hour Urine · Chemistry 2447-1 Hydroxyproline Free · Chemistry 2448-9 Hydroxyproline Free (Urine) · Chemistry 2449-7 Hydroxyproline Free in 24 hour Urine · Chemistry 2450-5