Manifestations of thyroid disease post COVID-19 illness: Report of Hashimoto thyroiditis, Graves' disease, and subacute thyroiditis.

Objective: We present three cases of thyroid dysfunction such as Hashimoto thyroiditis, Graves' disease and subacute thyroiditis which developed few weeks after resolution of acute phase of COVID -19 infection in patients with no prior thyroid disease.

Methods: We discuss clinical presentation, diagnostic evaluation and subsequent management and follow-up in three patients.

Results: All three patients tested positive for COVID-19 infection prior to diagnosis.

Red blood cell phenotype fidelity following glycerol cryopreservation optimized for research purposes.

Intact red blood cells (RBCs) are required for phenotypic analyses. In order to allow separation (time and location) between subject encounter and sample analysis, we developed a research-specific RBC cryopreservation protocol and assessed its impact on data fidelity for key biochemical and physiological assays. RBCs drawn from healthy volunteers were aliquotted for immediate analysis or following glycerol-based cryopreservation, thawing, and deglycerolization.