What to think when only free light chain ratio is abnormally high?

Posted by georgiagurl @georgiagurl, Nov 2, 2025

I went to a hemotologist because I had a blood clot and needed to know if I needed to take a blood thinner forever. I am a 68 year old female and when blood work came back, it said my free light chain ratio was 101.55, kappa light chain was 89.36 and the spep test said "a small amount of free kappa monoclonal protein (too small to quantitate) is present." I had never heard of these tests and was surprised something was listed as abnormal. I have no symptoms and all other blood work was normal. I am scheduled for a bone marrow biopsy. When only a ratio if high, and nothing else is abnormal, is this something to be concerned about or is it a monitor and watch thing?

Interested in more discussions like this? Go to the Blood Cancers & Disorders Support Group.

Profile picture for barbarian1 @barbarian1

@swalex I just got my latest light chains blood results (slightly higher than April test) w kappa 26.3 mg/L and lambda 11 w ratio 2.39 w normal range .26-1.65 w my IgM 4,655 and normal range 20-172 mg/dl which seems ridiculously highly inaccurate. How could ur #s be that high? Im requesting another test from diff provider like Quest

Jump to this post

@barbarian1 “requesting another test from diff provider like Quest” is a good idea.
Ask your doctor if it could also be a sign of kidney disease, chronic inflammation, or an immune system disorder, as this may require additional blood tests.

REPLY

I didn't rec reply re lq 2nd test elsewhere so it's prob not ok

REPLY
Profile picture for swalex @swalex

@barbarian1 “requesting another test from diff provider like Quest” is a good idea.
Ask your doctor if it could also be a sign of kidney disease, chronic inflammation, or an immune system disorder, as this may require additional blood tests.

Jump to this post

@swalex I will. Ty

REPLY
Profile picture for georgiagurl @georgiagurl

@wesleym My BMB will be under sedation as I have read too many non-sedation online horror stories to do it otherwise. Luckily, my hematologist’s office specializes in cancer treatment. My internal medicine doctor recommended her because she is very thorough.

Jump to this post

@georgiagurl how are you doing, I was thinking about you today. I was wondering, have you had your BMB yet?

REPLY
Profile picture for Chris, Volunteer Mentor @auntieoakley

@georgiagurl how are you doing, I was thinking about you today. I was wondering, have you had your BMB yet?

Jump to this post

@auntieoakley Thank you for asking, that is very kind. I had the BMB on this past Friday and so I now await the results of the testing. The BMB was under sedation and I am so glad for that. But, I have to say, it really did hurt to walk the rest of that day (although I did mostly rest that day). The next day it was not so bad to walk and a couple Tylenol helped greatly. Of course, the waiting time for the results is nerve-wracking but can't do anything about that. I will update once I receive. Thank you again for inquiring.

REPLY

I received some of my test results and they indicate 8%-10% plasma cells in bone marrow so the pathologist said I likely have smoldering myeloma. As noted above, I do have a very high kappa/lambda ratio of 101.55. I am now waiting for the FISH results to determine the risk level. I am now also scheduled for a PET scan to determine if there are any lesions. I initially went to the hemotologist solely to determine if I had Factor V (increased likelihood of getting blood clots) and now I may have smoldering myeloma? Geez. What a ride.

REPLY

Goodness, still waiting for Fish Test results after 3 weeks of waiting. The hematologist’s nurse practitioner called to explain that doctor wants to me to begin treatment for MM regardless of not having fish results; Nurse said doctor’s decision is based on free light chain ratio of 101 and kappa level of 89. Pet scan is normal but igm is below normal at 18; iga is low normal at 76 as is igg at 660. Plasma cells at 8-10%. I still haven’t met the doctor because nurse practitioner has been handling everything. I am not sure if treatment is necessary at this point. But shouldn’t doctor have called me to set up an appointment to discuss all this?

REPLY
Profile picture for georgiagurl @georgiagurl

Goodness, still waiting for Fish Test results after 3 weeks of waiting. The hematologist’s nurse practitioner called to explain that doctor wants to me to begin treatment for MM regardless of not having fish results; Nurse said doctor’s decision is based on free light chain ratio of 101 and kappa level of 89. Pet scan is normal but igm is below normal at 18; iga is low normal at 76 as is igg at 660. Plasma cells at 8-10%. I still haven’t met the doctor because nurse practitioner has been handling everything. I am not sure if treatment is necessary at this point. But shouldn’t doctor have called me to set up an appointment to discuss all this?

Jump to this post

@georgiagurl I would definitely want an appointment before starting treatment, and it seems a little strange that your doctor didn't. There are important issues to discuss - including, of course, starting treatment itself. As we noted above, your presentation is similar to mine, although 8-10% (vs 5-7%) plasma per BMB.

I know you're satisfied with your hematologist who specializes in cancer, but there is still something to be said for a dual-certified hematologist/oncologist with considerable experience in treating monoclonal gammopathies. This is complex stuff.

REPLY
Profile picture for wesleym @wesleym

@georgiagurl I would definitely want an appointment before starting treatment, and it seems a little strange that your doctor didn't. There are important issues to discuss - including, of course, starting treatment itself. As we noted above, your presentation is similar to mine, although 8-10% (vs 5-7%) plasma per BMB.

I know you're satisfied with your hematologist who specializes in cancer, but there is still something to be said for a dual-certified hematologist/oncologist with considerable experience in treating monoclonal gammopathies. This is complex stuff.

Jump to this post

@wesleym Thank you for your comments. I am trying to arrange for a second opinion at the University of Michigan's Rogel Cancer Center. They have a specific Myeloma Center there. How soon did you begin to treat? Did it take you forever to get your FISH test results? I am now going on week 4 without the results.

REPLY

The FISH results (GenPath) took eight days from the BMB.

I still am not in treatment, due to the BMB results (I've had three, most recently about 2 months ago). Given my LC and 24-hr urine results, the hem/onc has fully expected all of the BMBs to show >10% plasma involvement, and none has. In addition, I have none of the CRAB criteria, and feel well for my age (74); only symptom is mild fatigue, and I'm (obviously) not as young as I used to be. I work out every day, riding my bike 20 miles.

So I'm teetering on the treat / no treat edge.

REPLY
Please sign in or register to post a reply.