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Metyrapone Test

This Metyrapone Test is a stimulation test to assess the hypothalamic pituitary adrenal axis. In essence, it is a practical dynamic test…

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LDL calculator

This calculator for estimating LDL cholesterol is based on the Friedewald equation. Enter lipid values in either mg/dL or mmol/L to calculate…

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Sodium correction in hyperglycemia

A calculator for serum sodium correction in the setting of hyperglycemia. In normal physiology, effective osmolarity in the presence of overt hyperglycemia…

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Riedel Thyroiditis Mnemonic

A rare fibrotic condition that results in the destruction of the thyroid and overgrowth of progressively fibrosing connective tissue that may invade…

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Plummer’s nails

Onycholysis occurring in the setting of hyperthyroidism is classically referred to as Plummer’s nails. This condition typically runs a chronic clinical course…

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Hounsfield Unit Chart

The Hounsfield unit (HU) measures the attenuation of X-rays by tissue. It is defined as the ratio of the intensity of the…

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