Blood products are frequently collected in one country and used within another country as part of military operations, international relief efforts, or meeting the needs of recipients with uncommon product requirements. To that end, the World Health Organization in collaboration with ICCBBA maintains the ISBT 128 coding system for all medical products of human origin including blood, organs, bone marrow, and cord blood.
Your Score:
Your Ranking:
 |
Justin Juskewitch, M.D., Ph.D. Fellow, Clinical Informatics Mayo Clinic |
 |
James Stubbs, M.D. Consultant, Transfusion Medicine Mayo Clinic Assistant Professor of Laboratory Medicine and Pathology Mayo Clinic College of Medicine |
An 18-month-old boy presented with nausea, vomiting, and progressive somnolence. Imaging studies revealed a large mass in the fourth ventricle, associated with obstructive hydrocephalus. He underwent gross total resection of the tumor.
Your Score:
Your Ranking:
 |
Amy Swanson, M.D. Fellow, Anatomic Pathology/Neuropathology Mayo Clinic |
 |
Aditya Raghunathan, M.D. Consultant, Anatomic Pathology Mayo Clinic Assistant Professor of Laboratory Medicine and Pathology Mayo Clinic College of Medicine |
A 47-year-old woman presented with a palpable breast mass.
Your Score:
Your Ranking:
 |
Toshi Ghosh, M.D. Resident, Anatomic and Clinical Pathology Mayo Clinic |
 |
Daniel Visscher, M.D. Consultant, Anatomic Pathology Mayo Clinic Professor of Laboratory Medicine and Pathology Mayo Clinic College of Medicine |
A 52-year-old female presented to the emergency department with chest discomfort. Cardiac troponin I (TnI), measured using a goat antibody-based sandwich immunoassay (ADVIA Centaur, Siemens Healthcare Diagnostics), was 9.22ng/mL (reference interval: ≤0.04ng/mL). Follow-up testing included troponinT (TnT) measurement of 0.02 ng/mL (reference interval: ≤0.01ng/mL) using a mouse antibody and biotin/streptavidin-based sandwich immunoassay from Roche Diagnostics, Inc (Elecsys). Because of discrepant cardiac troponin concentrations, the physician contacted the laboratory director. The laboratory investigated for assay interference with results displayed in tables below.
Your Score:
Your Ranking:
 |
Katherine Turner, Ph.D. Fellow, Clinical Chemistry Mayo Clinic |
 |
Nikola Baumann, Ph.D. Consultant, Clinical Core Laboratory Services Mayo Clinic Assistant Professor of Laboratory Medicine and Pathology Mayo Clinic College of Medicine |
