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Endocrine dysfunction in the nephrotic syndrome

Jai Radhakrishnan, MD, MS
Section Editors
Richard J Glassock, MD, MACP
Fernando C Fervenza, MD, PhD
Deputy Editor
John P Forman, MD, MSc


The nephrotic syndrome is characterized by a marked increase in the glomerular permeability to macromolecules. The associated urinary losses of albumin and hormone-binding proteins are responsible for many of the metabolic derangements and endocrine abnormalities in these patients [1].

This topic review will emphasize the alterations in thyroid, vitamin D, and calcium metabolism. The effects on lipid metabolism are discussed elsewhere. (See "Lipid abnormalities in nephrotic syndrome".)


Thyroid function tests reveal variable results in the nephrotic syndrome, primarily depending upon the level of protein losses in the urine. In addition, other factors that are frequently present in patients with the nephrotic syndrome, such as hypoalbuminemia, increased serum free fatty acid concentrations, and furosemide administration, can also affect thyroid function tests [2-4]. (See "Laboratory assessment of thyroid function".)

Relatively normal glomerular filtration rate — Urinary losses of thyroxine (T4)-binding globulin (TBG) and other thyroid hormone-binding proteins (transthyretin and albumin) and the T4 bound to them result in a low total T4 concentrations in approximately 50 percent of nephrotic patients with a relatively normal glomerular filtration rate (GFR) [5-7]. Serum triiodothyronine (T3) concentrations may also be low due also to decreased binding. There is often a good correlation between the serum T4 and T3 and the serum albumin concentration [7]. Serum reverse T3 (rT3) concentrations are also low.

Despite these changes, nephrotic patients are usually clinically euthyroid (see "Laboratory assessment of thyroid function") [7]:


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Literature review current through: Sep 2016. | This topic last updated: Jul 7, 2014.
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