Your doctor will likely look at your results alongside other health markers to determine if follow-up is needed: Free Light Chains: MedlinePlus Medical Test
Conditions like multiple myeloma or MGUS (Monoclonal Gammopathy of Undetermined Significance) can cause one type of light chain to be overproduced, skewing the ratio. Abnormal Serum Light Chain Ratio
While an abnormal ratio can sometimes indicate a serious condition, it is often caused by non-cancerous factors. Common Causes of an Abnormal Ratio Your doctor will likely look at your results
Conditions like rheumatoid arthritis or recent viral infections can temporarily increase light chain production. Abnormal Serum Light Chain Ratio
Because the kidneys filter these proteins out of your blood, chronic kidney disease can lead to higher levels and slightly altered ratios.