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 60 of 2,187 · by category · by group · panels · answer lists · parts
Sodium · Chemistry 2951-2 Sodium in 24 hour Stool · Chemistry 2952-0 Sodium in 72 hour Stool · Chemistry 2953-8 Sodium in Sweat · Chemistry 2954-6 Sodium (Urine) · Chemistry 2955-3 Sodium in 24 hour Urine · Chemistry 2956-1 Sodium renal clearance in 24 hour Urine and Serum or Plasma · Chemistry 2957-9 Sodium/Potassium in Sweat · Chemistry 2958-7 Sodium/Potassium (Urine) · Chemistry 2959-5 Somatostatin (qualitative) · Chemistry 2960-3 Somatostatin · Chemistry 2961-1 Somatotropin (Amniotic Fluid) · Chemistry 2962-9 Somatotropin · Chemistry 2963-7 Specific gravity (Body Fluid) · Chemistry 2964-5 Specific gravity (Urine) · Chemistry 2965-2 Specific gravity of 24 hour Urine · Chemistry 2966-0 Starch granules (Stool, qualitative, light microscopy) · Chemistry 2967-8 Starch granules (Stool, qualitative, light microscopy) · Chemistry 2968-6 Stercobilin (Stool, qualitative) · Chemistry 2969-4 Streptomyces proteinase (qualitative) · Chemistry 2970-2 Substance P · Chemistry 2971-0 Succinate (Urine) · Chemistry 2972-8 Succinylacetone (Urine) · Chemistry 2973-6 Sucrose in Specimen · Chemistry 2974-4 Sulfate (Urine) · Chemistry 2975-1 Sulfate.inorganic · Chemistry 2976-9 Sulfite oxidase · Chemistry 2977-7 Superoxide dismutase · Chemistry 2978-5 Taurine (CSF) · Chemistry 2979-3 Taurine (qualitative) · Chemistry 2980-1 Taurine · Chemistry 2981-9 Taurine (Urine) · Chemistry 2982-7 Terminal deoxyribonucleotidyl transferase · Chemistry 2983-5 Testosterone (oral fluid) (Saliva) · Chemistry 2984-3 Testosterone (Semen) · Chemistry 2985-0 Testosterone · Chemistry 2986-8 Testosterone (Urine, qualitative) · Chemistry 2987-6 Testosterone (Urine) · Chemistry 2988-4 Testosterone in 24 hour Urine · Chemistry 2989-2 Testosterone.free+weakly bound · Chemistry 2990-0 Testosterone Free · Chemistry 2991-8 Testosterone (Amniotic Fluid) · Chemistry 2992-6 Testosterone · Chemistry 2993-4 Testosterone Free · Chemistry 2994-2 Tetrahydrocortisol in 24 hour Urine · Chemistry 2995-9 Tetrahydrodeoxycortisol in 24 hour Urine · Chemistry 2996-7 Tetrahydrofolate · Chemistry 2997-5 Thiamine (Blood) · Chemistry 2998-3 Thiamine · Chemistry 2999-1 Thiamine pyrophosphate · Chemistry 3000-7