When discussing kappa and Lambda light chains always remember the units either expressed as mg/liter (mg/l), or mg /decaliter (mg/dl) . This makes a difference in expression by a factor of ten times. A reading of 4.3 mg/dl is equal to 43 mg/l. The lab ranges of upper and lower control are adjusted accordingly. The guide below should help.

Kathryn, I was trying to figure out the answer to your question. I would think your kappa and m spike would go up at the same time. Comparing my labs don't help because I'm IgG Lambda. I guess it's possible to convert to light chain only myeloma. How high is your Kappa?

Your numbers don’t look bad. I’m SMM and my Kappa is higher.

Thank you for this link! 💛👍

Kathryn and Maryann,
If you do not want to print the Multiple Myeloma guide go to the link and download it from the link below.

https://issuu.com/international-myeloma-foundat...

Patient Handbook

https://issuu.com/international-myeloma-foundation/docs/patient-handbook-en