Understanding FGF-23 Levels: What Normal Values Mean
Explore the normal FGF-23 levels in pg/mL and understand what they mean for your health.
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is below the typical adult range (0–60 pg/mL).
is within the typical adult range (0–60 pg/mL).
is above the typical adult range (0–60 pg/mL).
This number is very far from the usual range - check which unit your report uses.
A value this far outside the range is worth discussing with your doctor today.
What a low result usually means
What a high result usually means
The range printed on your own report comes first - it differs between laboratories. This is not a diagnosis.
See it next to the rest of your report - upload it for a free, private explanationFree. Sign up with your email - no password, we send you a code.Fibroblast growth factor 23 (FGF-23) is a hormone produced by bone cells that plays a crucial role in regulating phosphate levels in the body. Phosphate is an essential mineral that helps build and repair bones and teeth, supports nerve function, and is involved in energy production. Understanding your FGF-23 levels can provide insights into your bone health and kidney function.
What is FGF-23?
FGF-23 is a hormone primarily produced by osteocytes, which are cells found in bone. Its main function is to regulate phosphate metabolism by reducing phosphate reabsorption in the kidneys and decreasing the production of vitamin D. This hormone helps maintain phosphate balance in the body, which is vital for various physiological processes.
Why FGF-23 Levels Matter
Monitoring FGF-23 levels is important because abnormal levels can indicate underlying health issues. Elevated FGF-23 levels can lead to phosphate wasting, where the body excretes too much phosphate. This can be an early indicator of kidney disease, as the kidneys play a significant role in managing phosphate levels. Additionally, high FGF-23 levels can be associated with bone disorders and cardiovascular issues.
Normal FGF-23 Levels
The reference range for FGF-23 levels can vary depending on the assay used. For intact FGF-23 assays, normal levels are typically up to approximately 60 pg/mL. It is important to note that these values can differ based on the specific test and laboratory standards. Always refer to your lab report for the precise reference range used in your test.
Factors Affecting FGF-23 Levels
Several factors can influence FGF-23 levels in the body:
- Kidney Function: Impaired kidney function can lead to elevated FGF-23 levels as the body attempts to manage phosphate balance.
- Bone Health: Conditions affecting bone metabolism, such as osteomalacia or osteoporosis, may alter FGF-23 levels.
- Dietary Intake: High phosphate intake from food sources can impact FGF-23 production.
Frequently asked questions
What is the role of FGF-23 in phosphate regulation?
FGF-23 helps regulate phosphate levels by reducing its reabsorption in the kidneys and lowering vitamin D production, which in turn decreases phosphate absorption from the intestine.
Can FGF-23 levels indicate kidney disease?
Yes, elevated FGF-23 levels can be an early marker of kidney disease as the hormone rises to manage phosphate balance when kidney function declines.
How are FGF-23 levels measured?
FGF-23 levels are measured through a blood test, and the results are typically reported in picograms per milliliter (pg/mL).
When to see a doctor
If your FGF-23 levels are outside the normal range provided by your laboratory report, it is important to consult with your healthcare provider. They can help interpret the results in the context of your overall health and any symptoms you may be experiencing.
This article is for informational purposes only and does not substitute professional medical advice. Always consult with your healthcare provider for decisions about your health.