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Symmetric dimethylarginine (SDMA)

SDMA is a biomarker for kidney function

SDMA is a methylated arginine that is produced endogenously by all nucleated cells in the body and excreted by the kidneys. It is released into circulation when intracellular proteins are processed. Stable production of SDMA is part of daily cell activity.

Trust SDMA for greater efficiency than creatinine and BUN testing

Historically, estimation of renal function has depended on various methods such as Glomerular Filtration Rate (GFR), BUN and creatinine. SDMA has been shown to correlate with GFR and is not subject to extra renal factors such as muscle mass. SDMA has also been shown to detect loss of kidney function earlier than creatinine.

LCMS gold standard methodology

The gold standard methodology for measuring SDMA is Liquid Chromatography Mass Spectrometry (LCMS), which has shown good correlation with glomerular filtration rate. Mass spectrometry, often referred to as mass spec, is an advanced analytical technique that is highly sensitive. LCMS is used to accurately identify and quantify molecules within a sample.


SDMA has been validated in dogs, cats, horses and rats (Other species are currently in process) through a comparison to the LCMS. All species validations utilize LCMS as the gold standard.

 Sample Submission

Assay Species Platform  Sample Type Sample Volume
SDMA  Rat  LCMS  Serum, Plasma  50µL
SDMA  Mouse  LCMS  Serum, Plasma  50µL
 SDMA  NHP  LCMS  Serum, Plasma  100µL
 SDMA  Dog  LCMS  Serum, Plasma  100µL
 SDMA  Cat  Beckman  Serum, Plasma 100µL
 SDMA Dog  Beckman  Serum, Plasma  100µL
Rat   Beckman  Serum, Plasma  100µL