Short-term biological variation of serum glial fibrillary acidic protein.
Silje Hovden ChristensenClaus Vinter Bødker HviidAnne Tranberg MadsenTina ParknerAnne Winther-LarsenPublished in: Clinical chemistry and laboratory medicine (2022)
and a marked semidiurnal variation. This implies caution on the timing of blood sampling and when interpreting GFAP in relation to reference intervals, especially in conditions where only small GFAP differences are observed.