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 55 of 2,187 · by category · by group · panels · answer lists · parts
Oxalate in 24 hour Urine · Chemistry 2701-1 Oxalate renal clearance in 24 hour Urine and Serum or Plasma · Chemistry 2702-9 Oxygen (Arterial Blood) · Chemistry 2703-7 Oxygen (Capillary Blood) · Chemistry 2704-5 Oxygen (Venous Blood) · Chemistry 2705-2 Oxygen (Body Fluid) · Chemistry 2706-0 Oxygen affinity (Blood) · Chemistry 2707-8 Oxygen saturation (Arterial Blood) · Chemistry 2708-6 Oxygen saturation (Capillary Blood) · HEMODYN.MOLEC 2709-4 Oxygen saturation (Capillary Blood, oximetry) · HEMODYN.MOLEC 2710-2 Oxygen saturation (Venous Blood) · HEMODYN.MOLEC 2711-0 Oxygen saturation.calc from carbon dioxide.partial pressure · Chemistry 2712-8 Oxygen saturation Calculated from oxygen partial pressure (Blood) · Chemistry 2713-6 Fractional oxyhemoglobin (Arterial Blood) · Chemistry 2714-4 Fractional oxyhemoglobin (Capillary Blood) · Chemistry 2715-1 Fractional oxyhemoglobin (Venous Blood) · Chemistry 2716-9 Fractional oxyhemoglobin · Chemistry 2717-7 Oxytocin · Chemistry 2718-5 Palmitate (C16:0) · Chemistry 2719-3 Palmitoylphosphatidyl choline · Chemistry 2720-1 Pancreatic polypeptide · Chemistry 2721-9 Pantothenate, Plasma or Blood · Chemistry 2722-7 Para aminohippurate renal clearance in 24 hour Urine and Serum or Plasma · Drug and toxicology 2723-5 Para aminohippurate (Urine) · Drug and toxicology 2724-3 Para methylhippurate (Urine) · Drug and toxicology 2725-0 Para nitrophenol (Urine, qualitative) · Drug and toxicology 2726-8 Para nitrophenol (Urine) · Drug and toxicology 2727-6 Parathion · Drug and toxicology 2728-4 Parathyrin related protein · Chemistry 2729-2 Parathyrin.C-terminal · Chemistry 2730-0 Parathyrin.intact · Chemistry 2731-8 Parathyrin.mid molecule · Chemistry 2732-6 Parathyrin.N-terminal · Chemistry 2733-4 Pentoses in 24 hour Urine · Chemistry 2734-2 Pepsinogen (Blood) · Chemistry 2735-9 Pepsinogen I · Chemistry 2736-7 Pepsinogen I (Urine) · Chemistry 2737-5 Pepsinogen II · Chemistry 2738-3 Pepsinogen · Chemistry 2739-1 Pepsins in Gastric fluid · Chemistry 2740-9 Pepsins (Urine) · Chemistry 2741-7 Angiotensin converting enzyme · Chemistry 2742-5 pH (Amniotic Fluid) · Chemistry 2743-3 pH (Arterial Blood) · Chemistry 2744-1 pH (Capillary Blood) · Chemistry 2745-8 pH (Venous Blood) · Chemistry 2746-6 pH (CSF) · Chemistry 2747-4 pH (Body Fluid) · Chemistry 2748-2 pH of Gastric fluid · Chemistry 2749-0 pH (Pleural Fluid) · Chemistry 2750-8