Blood test for cancer. What you should know.
A variety of tests are necessary for an accurate cancer diagnosis.
Cancer blood tests may help your doctor collect relevant data about how your body is acting or if any organs have been affected.
A blood cancer test cannot fully determine if a patient has cancer unless the patient has blood cancer. However, your doctor may request a blood test to find tumour or cancer cells circulating through the bloodstream. Cancer tumors may commonly produce specific proteins or tumor cells may be released into the bloodstream.
Your doctor may want to keep track of these cancer markers since they aid as an indicator of cancer growth. It will let them know if the disease has propagated into other body parts. It will also let them know how well is your body responding to the treatment.
There are several markers that your doctor will search, depending on the type of cancer.
Some markers that your doctor may look for include CA 15.3 (breast and ovarian cancers), TRU-QUANT / CA 27.29 (breast cancer), CA125: (breast or ovarian cancer), CEA (colon, lung, and liver cancers), Circulating tumor cells (may monitor cancer mitigation).
Some noncancerous conditions may also trigger high elevations of cancer markers, therefore blood tests can not be utilized to fully determine a cancer situation (most of times).
Blood cancer tests have not yet been identified to work on their own or a 100% accurate has not been created and approved. Commonly more than one test is needed to confirm a diagnosis. And their usage is only at the doctor’s discretion.
Through Fast DNA-sequencing machines, some doctors are now starting to consider liquid biopsies as an effective technique to detect cancer. It is also helping them identify the tumors faster with this non-invasive method.
It may be used to help identify tumors at early stages and also track treatment results.