By definition it can be called thrombocytopenia

Since it's below 150 

I don't think you have to worry too much because it's less than 5% below the normal limit, and you don't have any issues with bleeding and clotting. 
 

Other more important aspect is the trend. Compared with your previous platelets counts, if it had been always in the low end of the range, it's OK. If it changed a lot then you have to pay attention.