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T4BPE - Overview: Thyroxine-Binding Protein Electrophoresis, Serum

Explaining unusual thyroxine (T4), free T4, and thyroxine-binding globulin test results that do not correlate with the patient's clinical presentation Detecting the presence of aberrant thyroxine-binding proteins, such as abnormal forms...

ABTIR - Overview: Antibody Titer, Blood and Serum

Monitoring antibody levels during pregnancy to help assess the risk of hemolytic disease of the newborn This test is not useful for monitoring the efficacy of Rh-immune globulin administration.

CARBG - Overview: Carbamazepine-10,11-Epoxide, Serum

Monitoring patients exhibiting symptoms of carbamazepine toxicity whose total serum carbamazepine concentration is within the therapeutic range, but who may be producing significant levels of the active metabolite epoxide, which can...

CD56 - Overview: CD56 Immunostain, Technical Component Only

Aiding in the identification of tumors with neuroendocrine differentiation Aiding in the identification of natural killer cell lineage in a subset of lymphomas

CD34I - Overview: CD34 Immunostain, Technical Component Only

A marker of immaturity in the setting of acute myeloid leukemia or B-cell lymphoblastic leukemia Diagnosis of gastrointestinal stromal tumors, solitary fibrous tumors, and angiosarcomas

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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....