High Turnover Help - Understanding my CTX/P1NP Ratio

Posted by br03 @br03, Feb 19 11:06am

Hi everyone, I’m trying to make sense of my recent labs and T-scores. I’ve been following Dr. Doug Lucas (not officially joined his OsteoCollective) regarding bone turnover markers, and here is where I stand:
• T-Scores: -4.2 (Vertebral) and -2.9 (Femoral)
• CTX: 585 pg/mL (High resorption)
• P1NP: 128 ng/mL (High formation)
• Calculated Ratio: 218 (P1NP/CTX x 1000)

My understanding is that a ratio >149 is the goal, so I'm encouraged that my bone formation marker is high, however my bone resorption is also very high.

Has anyone else dealt with high turnover markers like this?

Thanks for any insights!

Interested in more discussions like this? Go to the Osteoporosis & Bone Health Support Group.

to clarify the posting information:
Are you currently taking any osteoporosis medications or have you had a recent fracture?

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No, not taking any osteoporosis medications. I had a recent vertebral fracture T 8/9 in late October which is what started this whole process of getting the DEXA and discovering I have severe osteoporosis.

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Profile picture for mcchesney @kathleen1314

to clarify the posting information:
Are you currently taking any osteoporosis medications or have you had a recent fracture?

Jump to this post

@kathleen1314 No, not taking any osteoporosis medications. I had a recent vertebral fracture T 8/9 in late October which is what started this whole process of getting the DEXA and discovering I have severe osteoporosis.

REPLY
Profile picture for br03 @br03

No, not taking any osteoporosis medications. I had a recent vertebral fracture T 8/9 in late October which is what started this whole process of getting the DEXA and discovering I have severe osteoporosis.

Jump to this post

@br03
Sorry more clarification:
Have you already had bloodwork done to check your Vitamin D and Parathyroid Hormone (PTH) levels to rule out those common drivers of high bone turnover?

That fracture could be driving elevated bone numbers or secondary causes which I am assuming your endocrinologist is investigating. Discuss with your doctor if high turnover might be driven by other factors like hyperparathyroidism, thyroid issues, or Paget’s disease, especially given the very high absolute values.

Basically, you are ruling out causes and then you will be left with a clearer idea of how to proceed.

Also....
As the body heals a fracture there is frequently something called : The "Fracture Effect": A bone fracture significantly spikes both resorption and formation markers as the body attempts to repair the damage. P1NP and CTX typically peak around 6 to 12 weeks post-injury and can remain elevated for up to 6 months. Since your fracture was in late October, your current high levels may largely reflect this active healing process.

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Profile picture for mcchesney @kathleen1314

@br03
Sorry more clarification:
Have you already had bloodwork done to check your Vitamin D and Parathyroid Hormone (PTH) levels to rule out those common drivers of high bone turnover?

That fracture could be driving elevated bone numbers or secondary causes which I am assuming your endocrinologist is investigating. Discuss with your doctor if high turnover might be driven by other factors like hyperparathyroidism, thyroid issues, or Paget’s disease, especially given the very high absolute values.

Basically, you are ruling out causes and then you will be left with a clearer idea of how to proceed.

Also....
As the body heals a fracture there is frequently something called : The "Fracture Effect": A bone fracture significantly spikes both resorption and formation markers as the body attempts to repair the damage. P1NP and CTX typically peak around 6 to 12 weeks post-injury and can remain elevated for up to 6 months. Since your fracture was in late October, your current high levels may largely reflect this active healing process.

Jump to this post

@kathleen1314 Thank you for sharing this information. I wasn’t familiar with the “Fracture Effect,” but it makes a lot of sense. I’m currently working through lab testing to better understand the root cause. I know it’s not hyperparathyroidism, and my vitamin D levels along with several other micronutrients are in a good range.

I suspect this may be connected to my ongoing gut issues. I recently completed a GI-MAP test and am waiting on those results. My goal is to manage this without medication if possible, so I’m diving deeply into the research to better understand my options. I’m truly grateful for this group, I’ve already learned so much from everyone’s shared experiences.

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May I ask, what is P1NP?
Thank you.

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Profile picture for br03 @br03

No, not taking any osteoporosis medications. I had a recent vertebral fracture T 8/9 in late October which is what started this whole process of getting the DEXA and discovering I have severe osteoporosis.

Jump to this post

@br03 Did you ever find out why your markers were high? Mine are very high as well. My CTX is 1,340 and my P1NP is 87. I don't have any fractures. I had prior breast cancer six years ago. My Vitamin D and PTH are normal. I have osteopenia with my left femoral neck on deca at -1.4 and lumbar spine at
-1.8. I also have chronic kidney disease stage 3b. Does anyone have any idea why my markers are so high?

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Profile picture for vegada @vegada

@br03 Did you ever find out why your markers were high? Mine are very high as well. My CTX is 1,340 and my P1NP is 87. I don't have any fractures. I had prior breast cancer six years ago. My Vitamin D and PTH are normal. I have osteopenia with my left femoral neck on deca at -1.4 and lumbar spine at
-1.8. I also have chronic kidney disease stage 3b. Does anyone have any idea why my markers are so high?

Jump to this post

@vegada Thanks for checking back in. I’ve learned that the biggest driver of my bone loss appears to be related to gut health issues and chronic systemic inflammation. I’m also postmenopausal, but because of the findings from the Women’s Health Study, my doctor had not previously recommended BHRT. I eventually pursued additional testing, including a GI-MAP test and baseline hormone labs, which helped identify underlying concerns and led me to start BHRT.

I know this approach may not be an option for everyone, but I highly recommend considering a functional medicine provider if possible. They can often help look more deeply at root causes rather than just managing symptoms.

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Hi! I just had my CTX and P1NP blood tests after 3 months on Tymlos. CTX score = 895 and P1NP = 141. One thing I did not do was to fast for the CTX test as I was not advised to do by my Endo. I am taking both tests over this coming week.
I was told these numbers but are they? I have read a bunch and just don’t know. Now my endo did not tell me to get these tests done. I asked for them through my Primary. It’s a hard relationship with my Endo as she does not reach out to discuss these scores. Pretty frustrating.

So any thoughts on these numbers? I have read that a CTX this high could mean susceptible to fracture.

Any thoughts are welcome.

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Profile picture for br03 @br03

@vegada Thanks for checking back in. I’ve learned that the biggest driver of my bone loss appears to be related to gut health issues and chronic systemic inflammation. I’m also postmenopausal, but because of the findings from the Women’s Health Study, my doctor had not previously recommended BHRT. I eventually pursued additional testing, including a GI-MAP test and baseline hormone labs, which helped identify underlying concerns and led me to start BHRT.

I know this approach may not be an option for everyone, but I highly recommend considering a functional medicine provider if possible. They can often help look more deeply at root causes rather than just managing symptoms.

Jump to this post

@br03 thank you very much. I also agree that a functional medicine doctor is an excellent idea. I will check into getting an appt. tomorrow.

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