High PSP in clams
High PSP in clams - Sand Point, Alaska, USA
Persistently high levels of PSP recorded in the Shumagin Islands.
Unusually high PSP toxin levels making shellfish unsafe to eat.
Extremely high PSP levels
The paralytic shellfish poisoning (PSP) results for Sand Point, Alaska (butter clams collected 1/5/2015) had PSP toxin levels of 112 micrograms/100 grams.