Can you have lymphoma with normal blood results from full b

my partner has been having some signs which could indicate lymphoma including a DVT, breathless, tired, itchy, night sweats, then a hard painless lump appeared just above the collarbone. His scan is next week, he had blood took on Monday for a full blood count and it’s all normal. Does this sound promising for it not being lymphoma? As I thought something might be off with the white blood cells in lymphoma although I am probably wrong I’m just obviously clutching at straws