Cortisol is determined using a competitive Enzyme Linked ImmunoSorbent Assay (ELISA).   Cortisol samples may be shipped at room temperature.  Fatigue biomarker measures two peptides using either competitive Enzyme Linked ImmunoSorbent Assay (ELISA) or Liquid Chromatography utilizing tandem Mass Spectroscopy (LC-MSMS).  Fatigue biomarker is the log transformed ratio of concentrations of two oral fluid (oral fluid is the mixture of fluids secreted by glands in the oral cavity) specific peptides derived from the family of Proline-Rich Proteins (PRP).   PRP’s are found in abundance in oral fluid only.  Muscle stress is determined by measuring myoglobin, a protein released when muscle is damaged or stressed.  Samples must be frozen immediately and shipped in a frozen state to ensure stability.   Please follow instructions for collection and shipment of samples precisely or results may be invalid.  Test results are intended solely for educational purposes.  Testing does not replace medical treatment.  If you have any concerns regarding fatigue or other medical issues please consult with a qualified medical professional.       

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Expedited shipping and processing charges

Standard Delivery (7-10 Days)


Expedited Delivery (3-4 days)


Immediate Results (48 hours)


Additional information

Number of Units

1 ($390/test), 2 ($201/test), 3 ($154/test), 4 ($106/test), 5 ($95/test), 6 ($83/test), 7 ($72/test), 8 ($60/test), 9 ($57/test), 10 ($54/test), 11 ($51/test), 12 ($48/test), 13 ($45/test), 14 ($42/test), 15 ($39/test), 16 ($36/test)