The phrase "about one week before" is correct and usable in written English.
It can be used to indicate a time frame that is approximately one week prior to a specific event or date.
Example: "The meeting was scheduled for March 15, and I received the agenda about one week before that date."
Alternatives: "approximately one week prior" or "roughly a week earlier".
Michael Foley said he lost hope after receiving an email about one week before a video of Foley's killing was released, on 20 August.
Infection begins about one week before symptoms appear.
Early drought stress is a more severe stress imposed by withholding irrigation from about one week before flowering until maturity.
Drought stress was imposed by withholding irrigation from about one week before flowering in early-onset treatment, while drought stress in the late-onset treatment was imposed by withholding irrigation from 50% flowering.
The Swiss Foreign Ministry, in a statement, said the agreement would be signed about one week before a conference, also in Geneva, that is expected to pave the way for Israel to join the Red Cross movement by approving an additional emblem, a red crystal, for use in Israel, in addition to the red cross or red crescent now in use.
Miller began his internal review about one week before the news went public.
After air-drying for 1 h, seeds were sprinkled onto sterile, solid Murashige and Skoog (MS) medium in petri dishes, stratified by storing the plate at 4 °C for 3 days, and then transferred to a light incubator (23 °C, 16 h light, 8 h dark) for about one week of growth before being used for experiments as described.
After hatching the larvae have a yolk-sac lasting for about one week but feeding has to start before the yolk is exhausted.
Decrease in antigen expression was followed by a transient increase above the level for untreated cells, before normalization occurred about one week after treatment.
