High levels have been observed in 60% to 80% of functioning and non-functioning NETs, but these high levels have also been observed in situations such as renal insufficiency, chronic atrophic gastritis, and PPI use in which no tumors are present 34.Other nonspecific markers include neuron- specific enolase, PP and chorionic gonadotropin hormone with less sensitivity and specificity than CgA11.
Niveles altos se han observado en el 60-80% de los TNE funcionantes o no funcionantes, o en situaciones no tumorales como la insuficiencia renal, GCA, terapia con bloqueadores de bomba 34.