Table 3. Serum GFAP and UCH-L1 concentrations in cases stratified by neuroimaging results.

		N	GFAP (ng/mL)	UCH-L1 (ng/mL)
Cases	Positive CT (ICI)	29	0.73 (0.15–2.28)+++	0.44 (0.17–0.99)+++
	Skull Fracture Only	6	0.58 (0.09–1.59)++	0.14 (0.08–0.22)+*
	Negative CT	10	0.21 (0.08–1.37)+++	0.14 (0.08–0.27)+**

ICI = intracranial injury. Symbols indicate statistical difference of the Mann-Whitney test for differences between groups: vs Controls (⁺⁺⁺) p < 0.001, (⁺⁺) p < 0.01, (⁺) p < 0.05; vs Positive CT (*) p < 0.05, (**) p < 0.01.