LOINC Codes - Mayo Clinic Laboratories

LOINC® Logical Observation Identifiers Names and Codes (LOINC®) is clinical terminology that is important for laboratory test orders and results, and is one of a suite of designated standards for use in U.S. Federal Government...

FDA1S - Overview: Drugs of Abuse (10 panel) and Alcohol Screen, Serum

Drugs of Abuse (10 panel) and Alcohol Screen, Serum

PMND1 - Overview: Primary Membranous Nephropathy Diagnostic Cascade, Serum

Distinguishing primary from secondary membranous nephropathy using an algorithmic approach Monitoring patients with membranous nephropathy at very low antibody titers Screening for anti-phospholipase A2 receptor antibodies

PBCPN - Overview: Primary Biliary Cholangitis Antibody Panel, Serum

Evaluation of at-risk or previously diagnosed primary biliary cholangitis patients with new features of other liver diseases or systemic autoimmune diseases

PCDGG - Overview: Primary Ciliary Dyskinesia Gene Panel, Varies

Providing a genetic evaluation for patients with a personal or family history suggestive of primary ciliary dyskinesia Establishing a diagnosis of primary ciliary dyskinesia

PMHLH - Overview: Postmortem Primary Hemophagocytic Lymphohistiocytosis (HLH) Gene Panel, Tissue

Providing a comprehensive postmortem genetic evaluation in the setting of a death attributed to primary hemophagocytic lymphohistiocytosis Identifying a disease-causing variant in the decedent, which may assist with risk assessment and...

MPLVS - Overview: MPL Exon 10 Mutation Detection, Varies

Aiding in the distinction between a reactive cytosis and a myeloproliferative neoplasm

MPNML - Overview: MPL Exon 10 Sequencing, Reflex, Varies

Aiding in the distinction between a reactive cytosis and a myeloproliferative neoplasm when JAK2 V617F testing result is negative Evaluates for variants in MPL in an algorithmic process for MPNCM / Myeloproliferative Neoplasm, CALR with...

MPLR - Overview: MPL Exon 10 Mutation Detection, Reflex, Varies

Aiding in the distinction between a reactive cytosis and a chronic myeloproliferative disorder Evaluates for mutations in MPL in an algorithmic process for the MPNR / Myeloproliferative Neoplasm, JAK2 V617F with Reflex to CALR and MPL,...

PANOX - Overview: Pain Clinic Survey 10, Chain of Custody, Random, Urine

Detecting drug use involving amphetamines, barbiturates, benzodiazepines, cocaine, methadone, opiates, phencyclidine, and tetrahydrocannabinol This chain-of-custody test is intended to be used in a setting where the test results can be...

PN10X - Overview: Pain Clinic Survey 10, Chain of Custody, Random, Urine

Detecting drug use involving amphetamines, barbiturates, benzodiazepines, cocaine, methadone, opiates, phencyclidine, and carboxy-tetrahydrocannabinol This chain-of-custody test is intended to be used in a setting where the test results...

RPR10 - Overview: Respiratory Profile, Region 10, Southwestern Grasslands (OK, TX), Serum

Assessing sensitization to various inhalant allergens commonly found in the Southwestern Grasslands region, including Oklahoma and Texas Defining the allergen responsible for eliciting signs and symptoms Identifying...

TOBRA - Overview: Tobramycin, Random, Serum

Monitoring adequacy of serum concentration during tobramycin therapy This unit code is used whenever a specimen is submitted or collected without collection timing information. The phlebotomist should use this unit code if she or he does...

HLHGP - Overview: Primary Hemophagocytic Lymphohistiocytosis Gene Panel, Varies

Providing a comprehensive genetic evaluation for patients with a personal or family history suggestive of familial hemophagocytic lymphohistiocytosis (F-HLH) Establishing a diagnosis of F-HLH, allowing for appropriate management and...

CUT - Overview: Copper, Liver Tissue

Diagnosing Wilson disease and primary biliary cirrhosis using liver tissue specimens

XHIM - Overview: X-Linked Hyper IgM Syndrome, Blood

Screening for X-linked hyper-IgM (XL-HIGM) or CD40L deficiency, primarily in male patients younger than 10 years Ascertaining XL-HIGM carrier status in women of child-bearing age (younger than 45 years)

CD40 - Overview: B-Cell CD40 Expression by Flow Cytometry, Blood

Evaluating patients for hyper-IgM type 3 (HIGM3) syndrome due to defects in CD40, typically seen in patients less than 10 years Assessing B-cell immune competence in other clinical contexts, including autoimmunity, malignancy, and...

PM3CX - Overview: Lymph3Cx Assay, Primary Mediastinal Large B-cell Lymphoma and Diffuse Large B-cell Lymphoma, mRNA Gene Expression, NanoString, Tissue

Only indicated for formalin-fixed paraffin-embedded specimens from patients diagnosed with large B-cell lymphoma

VWFMP - Overview: von Willebrand Factor Multimer Analysis, Plasma

As a reflex component of several coagulation consultation unit codes, when indicated When results of complementary laboratory tests are abnormally low or discordant (eg, F8A / Coagulation Factor VIII Activity Assay, Plasma; VWACT / von...

HHTGG - Overview: Hereditary Hemorrhagic Telangiectasia and Vascular Malformations Gene Panel, Varies

Providing a genetic evaluation for patients with a personal or family history suggestive of hereditary hemorrhagic telangiectasia (HHT), cerebral cavernous malformation (CCM), capillary malformation-arteriovenous malformation syndrome...

CALR - Overview: CALR Mutation Analysis, Myeloproliferative Neoplasm (MPN), Varies

Rapid and sensitive detection of insertion and deletion-type mutations in exon 9 of CALR Aiding in distinguishing between reactive thrombocytosis and leukocytosis versus a myeloproliferative neoplasm (MPN), especially essential...

CUS1 - Overview: Copper, Serum

Diagnosis of: -Wilson disease -Primary biliary cholangitis -Primary sclerosing cholangitis

HYOX - Overview: Hyperoxaluria Panel, Random, Urine

Distinguishing between primary and secondary hyperoxaluria Distinguishing between primary hyperoxaluria types 1, 2, and 3

LPAGF - Overview: Lymphocyte Proliferation to Antigens, Blood

Assessing T-cell function in patients on immunosuppressive therapy, including solid-organ transplant patients Evaluating patients suspected of having impairment in cellular immunity Evaluation of T-cell function in patients with primary...

NAPSN - Overview: Napsin A Immunostain, Technical Component Only

Identification of primary lung adenocarcinoma

LPMGF - Overview: Lymphocyte Proliferation to Mitogens, Blood

Assessing T-cell function in patients on immunosuppressive therapy, including solid-organ transplant patients Evaluating patients suspected of having impairment in cellular immunity Evaluation of T-cell function in patients with primary...

EURO - Overview: Phospholipase A2 Receptor, Enzyme Linked Immunosorbent Assay, Serum

Distinguishing primary from secondary membranous nephropathy

TCRB - Overview: T-Cell Receptor V-Beta Repertoire Analysis, Spectratyping, Blood

Assessment of T-cell receptor diversity in various clinical contexts including inborn errors of immunity (formerly primary immunodeficiencies), monitoring immune reconstitution post-hematopoietic stem cell transplantation, and temporal...

SGTF - Overview: MYB (6q23) Rearrangement FISH, Tissue

Assessing for MYB gene rearrangements in patients with primary salivary gland carcinoma to aid in confirming or excluding the diagnosis of primary salivary gland adenoid cystic carcinomas

KRT7 - Overview: Keratin 7 (KRT7) Immunostain, Technical Component Only

Aiding in determining the primary site in carcinomas of unknown origin

KRTOS - Overview: Keratin (OSCAR) Immunostain, Technical Component Only

Aids in determining primary site in carcinomas of unknown origin

KRT20 - Overview: Keratin 20 (KRT20) Immunostain, Technical Component Only

Aids in determining the primary site in carcinomas of unknown origin

MALI - Overview: MAL Immunostain, Technical Component Only

Diagnosis of primary mediastinal large B-cell lymphoma

PLAIF - Overview: Phospholipase A2 Receptor (PLA2R), Renal Biopsy

Distinguishing primary membranous nephropathy from secondary membranous nephropathy

PATHC - Overview: Pathology Consultation

A subspecialty second opinion for a specific pathology question referred by a primary pathologist Note: A consultative opinion is not a full rendering of a primary diagnostic report (eg, multiple parts, margin status, CAP...

MGB - Overview: Mammaglobin (MGB) Immunostain, Technical Component Only

Breast-specific marker Aids in evaluating tumors of unknown primary site

TTFSP - Overview: Thyroid Transcription Factor (SPT24) Immunostain, Technical Component Only

Part of a panel of immunostains to identify the primary site for carcinomas of unknown origin

THSD7 - Overview: Thrombospondin Type-1 Domain-Containing 7A Antibodies, Serum

Distinguishing primary from secondary membranous nephropathy cases with antibodies against THSD7A

CASRG - Overview: CASR Full Gene Sequencing with Deletion/Duplication, Varies

Providing a genetic evaluation of individuals with a personal or family history of familial hypocalciuric hypercalcemia, neonatal severe primary hyperparathyroidism, or autosomal dominant hypoparathyroidism (autosomal dominant...

RISAP - Overview: Risankizumab Quantitation with Antibodies, Serum

Evaluation of patients with limited primary (initial) response to or secondary loss of response to risankizumab

TTF8G - Overview: Thyroid Transcription Factor (8G7G3/1) Immunostain, Technical Component Only

Identification of thyroid or lung cells as the primary tumor site in carcinomas of unknown origin

HCVSP - Overview: Hepatitis C Virus (HCV) Antibody Screen Prenatal, Serum

Screening of pregnant women for hepatitis C virus (HCV) infection in primary care settings, with or without risk factors for hepatitis C This test should not be used as a screening test for hepatitis C in blood or human cells/tissue...

GATA3 - Overview: GATA Binding Protein 3 Immunostain, Technical Component Only

Characterizing carcinomas, including primary bladder and breast carcinomas, and some types of mesenchymal and neuroectodermal tumors

GATAB - Overview: GATA-Binding Protein 3 Immunostain, Technical Component Only, Bone Marrow,

Characterizing carcinomas, including primary bladder and breast carcinomas, and some types of mesenchymal and neuroectodermal tumors

CD273 - Overview: CD273 (PD-L2) Immunostain, Technical Component Only

Differentiation of primary mediastinal large B-cell lymphoma from diffuse large B cell-lymphoma

P40NA - Overview: p40 + Napsin A Immunostain, Technical Component Only

p40 aids in the classification of carcinomas and lymphomas Napsin A aids in the identification of primary lung adenocarcinoma

BCELL - Overview: B-Cell and Antibody Deficiency Gene Panel, Varies

Providing a comprehensive genetic evaluation for patients with a personal or family history suggestive of an inherited primary B-cell disorder or humoral immunodeficiency Establishing a diagnosis of a primary B-cell disorder or humoral...

NELL1 - Overview: Neural Epidermal Growth Factor-Like 1 Protein Immunostain, Technical Component Only

Identification of neural epidermal growth factor-like 1 (NELL-1) protein primary membranous nephropathy

HYPTG - Overview: Hypertriglyceridemia Gene Panel, Varies

Providing a genetic evaluation for patients with a personal or family history suggestive of hereditary forms of primary hypertriglyceridemia and related conditions.

VEDOZ - Overview: Vedolizumab Quantitation with Antibodies, Serum

Assessing for primary or secondary loss of response to therapy with vedolizumab An aid to achieving desired serum concentrations of vedolizumab