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Test Catalog

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...

HIAAR - Overview: 5-Hydroxyindoleacetic Acid, Random, Urine

Biochemical diagnosis and monitoring of intestinal carcinoid syndrome using random urine specimens

B12 - Overview: Vitamin B12 Assay, Serum

Investigation of macrocytic anemia Workup of deficiencies seen in megaloblastic anemias

RFPN - Overview: Rheumatoid Factor Panel, Serum

Evaluating patients at-risk of rheumatoid arthritis (RA) or features of inflammatory arthritis Differentiating the antibody isotype profile in patients positive for rheumatoid factor (RF) Aid in the risk stratification of RF-seropositive...

TBPZA - Overview: Susceptibility, Mycobacterium tuberculosis Complex, Pyrazinamide, Varies

Susceptibility testing of Mycobacterium tuberculosis complex isolates growing in pure culture against pyrazinamide This test is not useful for Mycobacterium bovis and Myocobacterium bovis bacille Calmette-Guerin (BCG) isolates as they are...

RRPRS - Overview: Rapid Plasma Reagin Screen with Reflex to Titer, Serum

Aid for the diagnosis of infection with Treponema pallidum Rapid plasma reagin testing following a positive treponemal antibody test This test is not useful as a screening or confirmatory test for blood donor specimens.

CAORG - Overview: Comprehensive Marfan, Loeys-Dietz, Ehlers-Danlos, and Aortopathy Gene Panel, Varies

Providing a genetic evaluation for patients with a personal or family history suggestive of hereditary aortic disease Establishing a diagnosis for a variety of hereditary conditions involving aortic disease or overlapping clinical...

CCPQ - Overview: P/Q-Type Calcium Channel Antibody, Serum

Confirming a diagnosis of Lambert-Eaton syndrome Implicating autoimmunity as a disease-causing mechanism in patients with complex neurologic presentations, particularly in those with a history of cancer Implicating autoimmunity as the...

MALCT - Overview: Plasmodium Percent Parasitemia Reflex, Varies

Calculating percent parasitemia, which can be used to predict prognosis and monitor response to treatment for patients with malaria

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...

PARVG - Overview: Parvovirus B19 Antibodies, IgG, Serum

Serologic detection of recent or past parvovirus B19 infection using IgG antibodies This test is not useful as a screening procedure for the general population.

PARVM - Overview: Parvovirus B19 Antibody, IgM, Serum

Serologic detection of recent or past parvovirus B19 infection using IgM antibodies This test is not useful as a screening procedure for the general population.

ZNUCR - Overview: Zinc/Creatinine Ratio, Random, Urine

Identifying the cause of abnormal serum zinc concentrations using a random urine specimen

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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....

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....

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....

Week in Review: November 1 - Insights

Top highlights include: Facebook launches into the digital space of healthcare, medical breakthrough for Ebola, and how the brain makes memories.