PARVO - Overview: Parvovirus B19, Molecular Detection, PCR, Varies
Diagnosing parvovirus B19 infection
PC1TS - Overview: Purkinje Cell Cytoplasmic Antibody Type 1 (PCA-1) Titer, Serum
Identifying female patients whose subacute cerebellar degeneration or peripheral neuropathy is due to a remote (autoimmune) effect of gynecologic or breast carcinoma Reporting an end titer result from serum specimens
PR3 - Overview: Proteinase 3 Antibodies, IgG, Serum
Evaluating patients with clinical features of anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis, specifically granulomatosis with polyangiitis (GPA), microscopic polyangiitis, and eosinophilic granulomatosis with...
PSAU - Overview: Prostate-Specific Antigen (PSA) Ultrasensitive, Serum
As an aid in the detection of prostate cancer when used in conjunction with a digital rectal exam in men ages 50 years and older To aid in the prognosis and management of individuals diagnosed with prostate cancer Monitoring disease after...
TRYPT - Overview: Tryptase, Serum
Evaluation of individuals with suspected mast cell activation, which may occur as a result of anaphylaxis or allergen challenge Evaluation of patients with suspected mast cell activation syndrome Evaluation of patients with suspected...
T3 - Overview: T3 (Triiodothyronine), Total, Serum
Second-order testing for hyperthyroidism in patients with low thyroid-stimulating hormone values and normal thyroxine levels Diagnosing triiodothyronine (T3) toxicosis This test is not useful for general screening of the population...
T4 - Overview: T4 (Thyroxine), Total Only, Serum
Monitoring treatment with synthetic hormones (synthetic T3 [triiodothyronine] will cause a low total T4 [thyroxine]) Monitoring treatment of hyperthyroidism with thiouracil and other anti-thyroid drugs Index of thyroid function when the...
TGQN - Overview: Thyroglobulin, Tumor Marker, Serum
Quantitative thyroglobulin measurement as a part of evaluating suspected interference from heterophile antibodies causing a falsely elevated thyroglobulin result
7AC4 - Overview: 7AC4, Bile Acid Synthesis, Serum
Screening for bile acid malabsorption in patients with irritable bowel syndrome with diarrhea
DCORT - Overview: 11-Deoxycortisol, Serum
Diagnostic workup of patients with congenital adrenal hyperplasia Part of metyrapone testing in the workup of suspected secondary or tertiary adrenal insufficiency Part of metyrapone testing in the differential diagnostic workup of...
Information: Interpreting Laboratory Tests to Determine New vs. Residual Use of Marijuana - Insights
In this month's "Hot Topic," Paul Jannetto, Ph.D., identifies how to determine new vs. residual use of marijuana in a patient, and teaches how to calculate the carboxy-tetrahydrocannabinol (carboxy-THC)...
Laboratory and Pathology Research Roundup: March 12 - Insights
known. We performed laser microdissection (LCM) of glomeruli followed by mass spectrometry (MS) in 12 cases each of DDD, C3GN, and pretransplant kidney control biopsies....
COVID-19: At-home sample collection vs. at-home testing - Insights
The concept of at-home testing for COVID-19 sounds straightforward. But there's nuance to it that's important to understand. Right now, an at-home test for COVID-19 is not available, although there may be one coming soon. But in some areas,...
Clinic Laboratory and Pathology Research Roundup: Nov. 12 - Insights
This week’s Research Roundup highlights a mechanism for preventing asymmetric histone segregation onto replicating DNA strands.
Transfusion Toons: A1 vs. A2 - Insights
Justin Kreuter, M.D., Clinical Pathologist and Medical Director of the Mayo Clinic Blood Donor Center in Rochester, Minnesota, and Theresa Malin, an Education Specialist in Transfusion Medicine at Mayo Clinic, have launched “Transfusion...