Units of Measurement - Mayo Clinic Laboratories
Units of Measure A list of common units used in the reporting of our assays has been defined. Refer to the table for these units as well as the recommended report abbreviations. Last updated: June 6, 2025...
RBCME - Overview: Red Blood Cell Membrane Evaluation, Blood
Investigation of suspected red cell membrane disorders, such as hereditary spherocytosis or hereditary pyropoikilocytosis This test is not useful for hereditary elliptocytosis.
GNVWD - Overview: von Willebrand Disease, VWF and GP1BA Genes, Next-Generation Sequencing, Varies
Evaluating von Willebrand disease and platelet-type von Willebrand disease in patients with a personal or family history suggestive of von Willebrand disease Confirming von Willebrand disease or platelet-type von Willebrand disease...
FCCK1 - Overview: Cholecystokinin (CCK)
Cholecystokinin (CCK)
CXCL9
MCMRU - Overview: Mast Cell Mediators, Random, Urine
Evaluating patients at risk for mast cell activation syndrome (eg, systemic mastocytosis) using random urine collections
FAMBT - Overview: Amyloid Beta-Protein
Amyloid Beta-Protein
FENDI - Overview: Endothelin I
Endothelin I
FPDPG - Overview: Prostaglandin D2 (PGD2)
Prostaglandin D2 (PGD2)
ACASM - Overview: Pernicious Anemia Cascade, Serum
Diagnosis of pernicious anemia Diagnosis of vitamin B12 deficiency-associated neuropathy
RLTE4 - Overview: Leukotriene E4, Random, Urine
Aiding in the evaluation of patients at-risk for mast cell activation syndrome (eg, systemic mastocytosis, IgE-mediated allergies, or aspirin-exacerbated respiratory disease) using random urine collections
FGHRH - Overview: Growth Hormone Releasing Hormone (GH-RH, also known as GHRF or GRF)
Growth Hormone Releasing Hormone (GH-RH, also known as GHRF or GRF)
FANG1 - Overview: Angiotensin I, Plasma
Angiotensin I, Plasma
CJDE - Overview: Creutzfeldt-Jakob Disease Evaluation, Spinal Fluid
Assessment of Creutzfeldt-Jakob disease or other human prion disease in patients with rapidly progressive dementia
FUNSF - Overview: Fungitell, CSF
Fungitell, CSF
EEEV1 - Overview: Red Blood Cell (RBC) Enzyme Evaluation, Blood
Identifying defects of red blood cell enzyme metabolism Evaluating patients with Coombs-negative hemolytic anemia
FPAN2 - Overview: Pancreastatin, Plasma
Pancreastatin, Plasma
SBL - Overview: Blastomyces Antibody Immunodiffusion, Serum
Detection of antibodies in serum specimens from patients with blastomycosis
CBL - Overview: Blastomyces Antibody Immunodiffusion, Spinal Fluid
Detection of antibodies in spinal fluid specimens from patients with blastomycosis
BCL6 - Overview: BCL-6 Immunostain, Technical Component Only
Classification of lymphomas
CD7 - Overview: CD7 Immunostain, Technical Component Only
Identification of T cells and natural killer cells
GPI1 - Overview: Glucose Phosphate Isomerase Enzyme Activity, Blood
The evaluation of individuals with Coombs-negative chronic hemolysis
VIP - Overview: Vasoactive Intestinal Polypeptide, Plasma
Detecting vasoactive intestinal polypeptide-producing tumors in patients with chronic diarrheal diseases
MMLYP - Overview: Antimicrobial Susceptibility Panel, Yeast, Varies
Determining in vitro quantitative antifungal susceptibility (minimum inhibitory concentration) of non-fastidious yeast As an aid in the management of certain circumstances, such as: -Refractory oropharyngeal infections due to Candida...
ELASF - Overview: Pancreatic Elastase, Feces
Diagnosis of exocrine pancreatic insufficiency in case of unexplained diarrhea, constipation, steatorrhea, flatulence, weight loss, upper abdominal pain, and food intolerances Monitoring of exocrine pancreatic function in cystic fibrosis,...
ALKOT - Overview: Anaplastic Lymphoma Kinase (ALK [OTI1A4]) Immunostain, Technical Component Only
Identification of anaplastic lymphoma kinase overexpression Diagnosis of inflammatory myofibroblastic tumor and anaplastic large cell lymphoma
KRT5 - Overview: Keratin 5 (KRT5) Immunostain, Technical Component Only
Differentiation of mesothelioma and squamous cell carcinoma versus adenocarcinoma
IL5P - Overview: Interleukin 5, Plasma
Evaluation of patients with disorders known to be associated with hypereosinophilia
KIT - Overview: KIT Immunostain, Technical Component Only
Aids in the identification of gastrointestinal stromal tumors
VEGF - Overview: Vascular Endothelial Growth Factor, Plasma
Evaluation of patients with suspected POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes) syndrome, particularly in differentiating from other forms of polyneuropathy and/or monoclonal plasma cell...
PK1 - Overview: Pyruvate Kinase Enzyme Activity, Blood
Evaluation of nonspherocytic hemolytic anemia Evaluation of neonatal anemia or jaundice Evaluation of unexplained noninfectious hepatic failure Evaluation of unexplained iron overload Evaluation of unusually severe hemoglobin S...
PKC - Overview: Pyruvate Kinase Enzyme Activity, Blood
Evaluation of nonspherocytic hemolytic anemia as a part of a profile Evaluation of neonatal anemia or jaundice Evaluation of unexplained noninfectious hepatic failure Evaluation of unexplained iron overload Evaluation of unusually...
ACTH - Overview: Adrenocorticotropic Hormone, Plasma
Determining the cause of hypercortisolism and hypocortisolism
PIPA - Overview: Pipecolic Acid, Serum
Differentiating between disorders of peroxisomal biogenesis (eg, Zellweger syndrome) and disorders with loss of a single peroxisomal function Detecting abnormal elevations of pipecolic acid in serum
PIPU - Overview: Pipecolic Acid, Random, Urine
Differentiating between disorders of peroxisomal biogenesis (eg, Zellweger syndrome) and disorders with loss of a single peroxisomal function Detecting abnormal elevations of pipecolic acid in urine
MUCN6 - Overview: Mucin 6, Immunostain, Technical Component Only
Aiding in subtyping intraductal papillary mucinous neoplasms as part of an immunopanel
MUCN5 - Overview: Mucin 5AC, Immunostain, Technical Component Only
Aiding in subtyping intraductal papillary mucinous neoplasms
GLP - Overview: Glucagon, Plasma
Diagnosis and follow-up of glucagonomas and other glucagon-producing tumors Assessing diabetic patients with problematic hyper- or hypoglycemic episodes (extremely limited utility)
SIL2R - Overview: Interleukin-2 Receptor Alpha Soluble, Plasma
Measuring the concentration of soluble interleukin-2 receptor alpha (sIL-2r alpha) in plasma Aids in the diagnosis and evaluation of patients for lymphoproliferative disorders, including autoimmune lymphoproliferative syndrome,...
SFUNG - Overview: 1,3-Beta-D-Glucan (Fungitell), Serum
Aiding in the diagnosis of invasive fungal infections caused by various fungi, including Aspergillus species, Fusarium species, Candida species, and Pneumocystis jirovecii, among others
GMCSF - Overview: Granulocyte Monocyte-Colony Stimulating Factor, Plasma
Measuring the concentration of granulocyte macrophage-colony stimulating factor (GM-CSF) in plasma Understanding the etiology of chronic inflammatory diseases or infections, when used in conjunction with clinical information and other...
HIBC - Overview: Histoplasma/Blastomyces Panel, Spinal Fluid
Aiding in the diagnosis of histoplasmosis or blastomycosis meningitis
NMHR - Overview: N-Methylhistamine, Random, Urine
Screening for and monitoring of mastocytosis and disorders of systemic mast-cell activation, such as anaphylaxis and other forms of severe systemic allergic reactions using random urine specimens Monitoring therapeutic progress in...
WBGDR - Overview: Beta-Globin Gene Cluster Deletion/Duplication, Blood
Determining the etiology of hereditary persistence of fetal hemoglobin (HPFH), delta-beta thalassemia, or other large deletions involving the beta-globin gene cluster Diagnosing less common causes of beta-thalassemia; these large...
THSCM - Overview: Thyroid Function Cascade, Serum
Screening for a diagnosis of thyroid disease
TMSI - Overview: Microsatellite Instability, Tumor
Evaluation of tumor tissue to identify patients at high risk for having Lynch syndrome, also known as hereditary nonpolyposis colorectal cancer Evaluation of tumor tissue for clinical decision-making purposes given the prognostic and...
DHRP - Overview: Dihydrorhodamine Flow Cytometric Phorbol Myristate Acetate Test, Blood
Evaluating chronic granulomatous disease (CGD), X-linked and autosomal recessive forms, complete myeloperoxidase deficiency Monitoring chimerism and nicotinamide adenine dinucleotide phosphate oxidase (NOX) function post-hematopoietic cell...
NMEM - Overview: Red Blood Cell Membrane Disorders Gene Panel, Next-Generation Sequencing, Varies
Providing a comprehensive genetic evaluation for patients with a personal or family history suggestive of a red blood cell (RBC) membrane disorder Second-tier testing for patients in whom previous targeted gene variant analyses were...
DHR - Overview: Dihydrorhodamine Flow Cytometric Test, Blood
Evaluation of chronic granulomatous disease (CGD), X-linked and autosomal recessive forms, Rac2 deficiency, complete myeloperoxidase deficiency Monitoring chimerism and nicotinamide adenine dinucleotide phosphate oxidase (NOX) function...
Mayo Clinic Ranked No. 1 Hospital Nationwide by U.S. News & World Report - Insights
Report’s 29th annual "Best Hospitals Honor Roll" published online on August 14. Mayo Clinic also ranked No. 1 in more specialties than any other hospital in the country....
NELL-1 [Test in Focus] - Insights
D., discusses how Mayo Clinic Laboratories’ new immunohistochemistry test for the detection of NELL-1 antigen, a biomarker for membranous nephropathy found in 10% to 15% of patients, provides diagnostic...
Looking Back on Clinical Chemistry 1 - Insights
in the Mayo Clinic Medical Laboratory Science program, takes a look back on her Clinical Chemistry 1 course....
Detection of (1→3)-𝝱-D-glucan as a Marker of Invasive Fungal Disease - Insights
In this month’s “Hot Topic,” Elitza Theel, Ph.D., will discuss the detection of (1→3)-β-D-glucan (BDG) in serum as a biomarker for the presence of invasive fungal infections....
Orexin-A/Hypocretin-1 for the Diagnosis of Type 1 Narcolepsy [Test in Focus] - Insights
test to perform as well as to interpret. The orexin-A/hypocretin-1 test is a sensitive and specific alternative to the MSLT to diagnose type 1 narcolepsy....