比如： CA 19-9，安省 大概55-90塊（這是我家3次做的不同抽血點不同的價格）。
我LD的第一次就高，手術半年後的下降了；我自己的正常。
這個檢查有假陽性和假陰性。
給過鏈接：
https://my.clevelandclinic.org/health/diagnostics/22338-blood-tests-for-cancer
Currently, there are five cancers that are recommended for screening regularly in the U.S.:
- Mammographies test for breast cancer, typically in women ages 45 to 54.
- HPV tests and Pap tests screen for cervical cancer, typically in women ages 25 and up.
- Colonoscopies test for colorectal cancer in adults over age 45.
- Low-dose CT scans can be conducted on those who are at high risk for lung cancer if they’re former smokers or have had occupational hazard exposure.
- Prostate-specific antigen (PSA) tests screen for prostate cancer in men ages 55 and older.
PSA 篩查在加拿大好像不做了，PSA值受影響的因素很多，像我LD就非常討厭做，說寧願癌了也不做。
在臨床上看到過幾例晚期前列腺癌轉移的病人。
The Gallieri test 沒聽說過，準確率51%，假陽性10-40%
還有一種新的測試： A proteomics based plasma test，測試早期癌症的陽性率很高。
https://bmjoncology.bmj.com/content/3/1/e000073
也許在醫院工作太久，看到太多平時很健康的老中青癌症，真的覺得很惋惜。有些家族遺傳病或到期該做的檢查就應該做，不過做不做檢查是非常個人的選擇。
如果你做了還得病，這就是命吧，我們每個人身體內都有癌細胞，正負結果就看身體的免疫和命了。
沒少聽到病人或家人說：我（TA）健身（看扛扛的肌肉和身材），吃有機，心態也好，為啥得癌？
聽某醫生答過：sometimes, just bad luck.
