Table 1.

Cerebrospinal fluid protein concentrations in infants age 56 days of age and younger.^a

Value	0 – 14 days	15 – 28 days	29 – 42 days	43 – 56 days	All Infants
	(N=52)	(N=87)	(N=110)	(N=126)	(N=375)
Mean (± SD)	79 (±23)	69 (±20)	58 (±17)	53 (±17)	62 (±21)
Median (IQR)	78 (58–93)	65 (56–85)	55 (49–65)	50 (41–62)	58 (48–72)
90th percentile	106	95	79	75	91
95th percentile	132	100	89	83	99
95th percentileb	132	101	89	82	97
95th percentilec	132	100	87	74	97

^aCerebrospinal fluid protein values presented as mg/dL

^bExcluding patients with antibiotics before lumbar puncture

^cExcluding preterm infants

Abbreviations: IQR, interquartile range; SD, standard deviation