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Arterial Blood Gas

Human Chorionic Gonadotropin (hCG): Internal Medicine for the Ignorant

hCG (human chorionic gonadotropin) is a hormone primarily produced during pregnancy but can also be elevated in certain cancers. Its levels can indicate pregnancy, multiple births, or specific cancers. Qualitative tests show presence, while quantitative measures indicate amounts. Historical pregnancy tests involved animal injections. This is part of "Internal Medicine for the Ignorant," releasing in November 2024.

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Arterial Blood Gas

Arterial Blood Gas (ABG): Internal Medicine for the Ignorant

The respiratory and metabolic systems compensate for pH disturbances caused by acidosis or alkalosis. Arterial blood gases (ABG) determine pH, oxygen, and carbon dioxide levels. Interpretation involves identifying pH alterations and their respiratory or metabolic origins. Compensation mechanisms maintain homeostasis. Venous blood gases can be an alternative to ABG in certain conditions.

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