
The NETest® – a Chromogranin A replacement and more?
Tumour Markers GeneralFor some years the gold standard tumour marker for Neuroendocrine Neoplasms (NENs) has been and remains today, Chromogranin A (and for certain scenarios Chromogranin B and C can provide some additional clues). Pancreastatin, which is actually a molecule of Chromogranin A, is another marker touted but appears to be limited to USA. Its main advantage is the ability to better handle the effects of Proton Pump Inhibitor (PPI) use which is prevalent in the general population. As we move to a new era of molecular/genetic tumour markers, there's a danger that NENs will be left behind, stuck with diagnostic tools not capable of meeting new demands. I see a lot of public criticism of Chromogranin A, but it's mainly directed at the problem of being skewed by the use…