• Welcome to Phoenix Rising!

    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of, and finding treatments for, complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia, long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

    To become a member, simply click the Register button at the top right.

active

  1. MarkRichardson

    Negative IgM means no active infection?

    I’m a bit confused. Does having a negative IgM on a blood test for a virus usually rule out an active viral infection? For instance on my EBV blood test I have positive IgG, negative IgM and positive Lytic antigens (T-Cells). I’ve spoken to four different doctors about this, three of them...