尋G6PD驗血指標--心急人

希望以下的網頁可以幫到你. http://health.popart.com.hk/qa/?jk=mypost&no=218

內面提到 :
G6PD缺乏者表面上並沒有特別的徵狀，唯一可靠的確定診斷方法是經血液檢驗去察看其濃度有多少，事實上大部份患者是經「新生兒常規臍血普查」發現的。如濃度在3.5度（U/Gm Hgb）或以下，便屬於「缺乏」者；當濃度被驗定為9度或以上，便屬「正常」；介乎3.6- 9度間，我們稱之為「邊緣正常」，而他們通常是隱性遺傳缺陷的攜帶者。

the definition of normal/reference range is, when sample taken from, say 100, normal people (clinically healthy), a normal distribution curve will be resulted. with the upper and lower portion of data omitted, the remaining 95% will be set as reference range. In most assay, it may varies depend on the population, race, and methodology.

G6PD is an enzyme in red blood cell.. when there is a oxydation stress, this enzyme will help to neutralize the oxidazing agent. Deficiency of the enzyme will lead to haemolysis (cell lysis).

therefore, first, I will recommend you to see if your childs sample can be sent to QMH or PWH.. they will have a better reference for hk population. or just go to see a govt dr.
secondly, a borderline enzyme level means it is not a deficiency.. but only when you have a very large stress (for the enzyme), then there will be a problem.. Therefore, treat you child as a G6PD def. case, but there wont be a big problem even if he/she encounter a oxidation stress.

做父母既擔心小朋友既健康係可以理解既．
其實所有生化測試，因為用既方法唔同，用既設備唔同，用既reagent唔同，標準值都會唔一樣，呢D叫做系統性誤差，係可以理解同接受既．所以有你所講既：搵唔到正常指標，每間化驗所既準則都唔一樣．．．
其實，每種測試方法，每批設備（設計相同，原理相同，用既reagent相同既設備）都會有一個normal range既，呢個normal range係經過用相同方法／相同設備測試過好多好多個samples，再分析測試結果既值，用統計學既原理計出黎既．
通常部機出廠既時候，廠方會有一套normal range提供俾買家，同時，如果用廠家既報告紙（即係部機用黎打印結果出黎o個張紙），咁報告紙上面就會印左各個tests既normal range響度．
只要檢驗結果係落響normal range裡面，咁即係正常．就算結果唔響normal range裡面，都唔使咁快擔心，複檢多一次先囉，因為設備有時都會失準，出現誤差既（呢個叫做random error）．