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PCT是一種人體的降鈣素原的英文縮寫(xiě)，是一種多肽蛋白，指的是人體的一種感染的指標(biāo)。

在機(jī)體感染炎癥以后2小時(shí)出現(xiàn)，6到8小時(shí)達(dá)高峰，正常值不超過(guò)0.3ng/l，超過(guò)0.5ng/l就是說(shuō)明體內(nèi)有炎癥反應(yīng)，當(dāng)然不一定是細(xì)菌感染，如果是重度燒傷、外傷等都有可能引起降鈣素原升高。

正常值在0.382到0.5之間為正常值，0.5-2為輕度感染。血紅蛋白正常，不低，沒(méi)有問(wèn)題，輕度貧血。

PCT的升高也表現(xiàn)在全身炎癥過(guò)度，臨床上稱(chēng)為反應(yīng)過(guò)度綜合征。

但當(dāng)人體出現(xiàn)輕度炎癥、局限性炎癥和慢性炎癥，PCT濃度一般不會(huì)顯著升高。

PCT is an English abbreviation of human procalcitonin. It is a polypeptide protein, which refers to an index of human infection.

It occurs 2 hours after the body is infected with inflammation and reaches the peak in 6 to 8 hours. The normal value does not exceed 0.3ng/l. If it exceeds 0.5ng/l, it indicates that there is an inflammatory reaction in the body. Of course, it is not necessarily bacterial infection. In case of severe burns and trauma, it may cause the increase of procalcitonin.

The normal value is between 0.382 and 0.5, and 0.5-2 is mild infection. Hemoglobin is normal, not low, no problem, mild anemia.

The increase of PCT is also manifested in excessive systemic inflammation, which is clinically called overreaction syndrome.

However, when mild inflammation, localized inflammation and chronic inflammation occur in the human body, the concentration of PCT will not increase significantly.