Table 2.

Median (IQR) Plasma NFL (Left Columns) and CSF NFL (Right Columns) Concentrations in Different Groups.

Groups	N	Plasma NFL	CSF NFL
		Median nmol/L (IQR)	Median nmol/L (IQR)
HIV negative (HIV-neg)	19	9.3 (5.9–13.1)	363 (264–487)
Primary HIV Infection (PHI)	13	11.2 (8.2–16.6)	732 (456–1288)
Neuroasymtpomatic HIV (NA)
CD4 > 350	19	9.0 (6.5–14.3)	488 (374–694)
CD4 200–349	17	9.7 (7.6–12.2)	573 (464–764)
CD4 50–199	19	12.1 (7.8–44.7)	640 (490–1530)
CD4 < 50	20	39.6 (12.0–103)	2415 (690–4420)
HIV-associated dementia (HAD)	11	114 (46.0–235)	16,185 (1513–43,010)
HIV, treated-suppressed (ART)	22	11.1 (8.6–12.8)	582 (322–706)