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 91 of 2,187 · by category · by group · panels · answer lists · parts
Complement C4a (Plasma) · Hematology and blood count 4501-3 Complement C4b binding protein (Serum Or Plasma) · Hematology and blood count 4502-1 Complement C4b binding protein (Serum Or Plasma) · Hematology and blood count 4503-9 Complement C4d (Red Blood Cells) · Hematology and blood count 4504-7 Complement C5 (Serum Or Plasma) · Hematology and blood count 4505-4 Complement C5a (Plasma) · Hematology and blood count 4506-2 Complement C6 (Serum Or Plasma) · Hematology and blood count 4507-0 Complement C7 (Serum Or Plasma) · Hematology and blood count 4508-8 Complement C8 (Serum Or Plasma) · Hematology and blood count 4509-6 Complement C9 (Serum Or Plasma) · Hematology and blood count 4510-4 Complement total hemolytic CH50 (Body Fluid) · Hematology and blood count 4511-2 Complement total hemolytic CH50 (Serum Or Plasma) · Hematology and blood count 4512-0 Complement C1r2+C1s2 (Serum Or Plasma) · Hematology and blood count 4513-8 Complement decay accelerating factor (Red Blood Cells) · Hematology and blood count 4514-6 Complement factor B (Serum Or Plasma) · Hematology and blood count 4515-3 Complement factor Ba (Serum Or Plasma) · Hematology and blood count 4516-1 Complement factor Bb (Serum Or Plasma) · Hematology and blood count 4517-9 Complement factor D (Serum Or Plasma) · Hematology and blood count 4518-7 Complement factor H (Serum Or Plasma) · Hematology and blood count 4519-5 Complement factor I (Serum Or Plasma) · Hematology and blood count 4520-3 Complement factor P (Plasma) · Hematology and blood count 4521-1 Complement iC3 (Plasma) · Hematology and blood count 4522-9 Complement iC3b receptors in Leukocytes · Hematology and blood count 4523-7 Complement membrane attack complex (C5b-C6-C7-C8-C9n) (Plasma) · Hematology and blood count 4524-5 Complement membrane C3b-C4b cofactor protein in Leukocytes · Hematology and blood count 4525-2 Complement protein · Hematology and blood count 4526-0 Complement receptor 1 · Hematology and blood count 4527-8 Complement receptor 2 · Hematology and blood count 4528-6 Complement receptor 3 · Hematology and blood count 4529-4 Complement receptor 4 · Hematology and blood count 4530-2 Complement total hemolytic · Hematology and blood count 4531-0 Complement total hemolytic CH50 (Serum Or Plasma) · Hematology and blood count 4532-8 Complement+Immunoglobulin (Red Blood Cells) · Hematology and blood count 4533-6 Cyanmethemoglobin/Hemoglobin.total · Hematology and blood count 4534-4 Cytotoxic percent reactive Ab (Serum, qualitative, quick method) · Hematology and blood count 4535-1 Deoxyhemoglobin/Hemoglobin.total · Hematology and blood count 4536-9 Erythrocyte (westergren method) · Hematology and blood count 4537-7 Erythrocyte (wintrobe method) · Hematology and blood count 4538-5 Erythrocyte (zetafuge) · Hematology and blood count 4539-3 Ethanol gelation · Hematology and blood count 4540-1 Clot Lysis in Platelet poor plasma (coagulation assay) · Hematology and blood count 4541-9 Haptoglobin (Serum Or Plasma) · Hematology and blood count 4542-7 Haptoglobin (Serum Or Plasma, electrophoresis) · Hematology and blood count 4543-5 Hematocrit (automated count) · Hematology and blood count 4544-3 Hematocrit (centrifugation) · Hematology and blood count 4545-0 Hemoglobin A/Hemoglobin.total · Hematology and blood count 4546-8 Hemoglobin A1/Hemoglobin.total · Hematology and blood count 4547-6 Hemoglobin A1c/Hemoglobin.total (Blood) · Chemistry 4548-4 Hemoglobin A1c/Hemoglobin.total (Blood, electrophoresis) · Chemistry 4549-2 Hemoglobin A2 (chromatography column) · Hematology and blood count 4550-0