Readers should cite both the Bio-protocol preprint and the original research article where this protocol was used:

Gruber, J(2020). Sample extraction and metabolic profiling. Bio-protocol Preprint. bio-protocol.org/prep534.
Teo, E., Ravi, S., Barardo, D., Kim, H., Fong, S., Cazenave-Gassiot, A., Tan, T. Y., Ching, J., Kovalik, J., Wenk, M. R., Gunawan, R., Moore, P. K., Halliwell, B., Tolwinski, N. and Gruber, J.(2019). Metabolic stress is a primary pathogenic event in transgenic Caenorhabditis elegans expressing pan-neuronal human amyloid beta. eLIFE. DOI: 10.7554/eLife.50069