Comparison of serum IFE with serum FLC in a large primary care and tertiary referral hospital showed that 50.7% of subjects with an M-protein demonstrated by IFE had normal κ/λ ratios. These ...

To accurately screen for and diagnose these disorders, various tests are required, including but not limited to serum protein electrophoresis (SPEP), serum and urine immunofixation (IFE), and serum ...