51 As GSH is known to be present in CSF at very low concentrations (~0.2 mol/l in both healthy and PD subjects), 52 relative to brain tissue concentrations (~1 mmol/l), 7 LCModel-calculated Cr concentrations ( C measured ) were corrected ( C corrected ) using the following formula, which assumes negligible contribution of CSF GSH to the total GSH signal: Absolute GSH levels (IU) were calculated by multiplying GSH/Cr ratios by CSF-corrected absolute Cr concentrations (IU)
Before it is opened, a sealed vial stays good until the expiration date printed on the label, which is usually 2 to 3 years from the date it was made
The stability of BPC-157, particularly the acetate salt form, is well-established
Hill adds
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