多くの遺伝性疾患では、受容体遺伝子の遺伝的欠陥が関与している。受容体が機能していないのか、ホルモンの産生が低下しているのか、判断するのが困難なことが多い。そのため、ホルモンのレベルが低下しているように見えるが、実際に受容体がホルモンに十分に反応していない内分泌疾患の「偽性-低下症」群を引き起こす。
免疫系内において詳細は「免疫受容体（英語版
免疫系における主な受容体は、パターン認識受容体（PRR）、トール様受容体（TLR）、キラー活性化（英語版）およびキラー阻害受容体（KARおよびKIR）、補体受容体（英語版）、Fc受容体、B細胞受容体およびT細胞受容体である[19]。
注釈[脚注の使い方]^ 受容体ロドプシンの場合、入力は化学物質ではなく光子となる。
^ 異なるLGICは、異なるイオンの電流を伝導する。これは、K+チャネルの選択フィルターと同様に、選択フィルターを用いて実現される。
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