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 59 of 2,187 · by category · by group · panels · answer lists · parts
Pyridoxine congeners · Chemistry 2901-7 Pyrimidine-5'-Nucleotidase (Blood, qualitative) · Chemistry 2902-5 Pyrimidine-5'-Nucleotidase (Blood) · Chemistry 2903-3 Pyrophosphate crystals (Synovial Fluid) · Hematology and blood count 2904-1 Pyruvate (Blood) · Chemistry 2905-8 Pyruvate (Arterial Blood) · Chemistry 2906-6 Pyruvate (CSF) · Chemistry 2907-4 Pyruvate (Urine) · Chemistry 2908-2 Pyruvate carboxylase (Tissue) · Chemistry 2909-0 Pyruvate dehydrogenase.cytochrome · Chemistry 2910-8 Pyruvate dehydrogenase.lipoamide (Tissue) · Chemistry 2911-6 Pyruvate kinase (Red Blood Cells) · Chemistry 2912-4 Pyruvate kinase · Chemistry 2913-2 Pyruvate oxidase · Chemistry 2914-0 Renin · Chemistry 2915-7 Renin renal clearance in 24 hour Urine and Serum or Plasma · Chemistry 2916-5 Renin --supine · Challenge tests 2917-3 Renin --upright · Chemistry 2918-1 Reticulin · Chemistry 2919-9 Retinal · Chemistry 2920-7 Retinoate · Chemistry 2921-5 Retinol (Blood) · Chemistry 2922-3 Retinol · Chemistry 2923-1 Riboflavin · Chemistry 2924-9 Ribonuclease · Chemistry 2925-6 Ribose · Chemistry 2926-4 Ribulose · Chemistry 2927-2 Beta fructofuranosidase (Red Blood Cells) · Chemistry 2928-0 Saccharides (Urine, qualitative) · Chemistry 2929-8 Sarcosine (qualitative) · Chemistry 2930-6 Sarcosine · Chemistry 2931-4 Sarcosine (Urine) · Chemistry 2932-2 Secretin · Chemistry 2933-0 Serine (CSF) · Chemistry 2934-8 Serine (qualitative) · Chemistry 2935-5 Serine · Chemistry 2936-3 Serine (Urine) · Chemistry 2937-1 Serine in 24 hour Urine · Chemistry 2938-9 Serotonin (Blood) · Chemistry 2939-7 Serotonin · Chemistry 2940-5 Serotonin in Platelets · Chemistry 2941-3 Sex hormone binding globulin · Chemistry 2942-1 Sialate · Chemistry 2943-9 Sialate (Urine) · Chemistry 2944-7 Sialidase · Chemistry 2945-4 Sialidase (Tissue) · Chemistry 2946-2 Sodium (Blood) · Chemistry 2947-0 Sodium (CSF) · Chemistry 2948-8 Sodium in Dialysis fluid · Chemistry 2949-6 Sodium (Body Fluid) · Chemistry 2950-4