Lab test interpretation

Acyclovir Crystals in Urine Sediment: Microscopy Findings

Morphology of acyclovir crystals in urine sediment by light and polarized microscopy: a clinical example of drug-induced crystalluria.

Urine sediment: needle-shaped acyclovir crystals in bright field and polarized light
Urine sediment: needle-shaped acyclovir crystals in bright field and polarized light

Acyclovir crystals in the urine of a 60-year-old man with HIV infection. Light and polarized microscopy. Source: William J. Mason, M.D., and Hilary H. Nickols, M.D. Crystalluria from Acyclovir Use. New England Journal of Medicine Volume 358 • Number 13 • March 27, 2008

🙏 Material kindly provided by medical laboratory technician Dmitry Emelyanov.