'was examined using' is correct and usable in written English.
You can use it when you are describing how something was studied or tested. For example, "The sample was examined using gas chromatography."
Statistical significance was examined using unpaired T-test analysis.
Specifically, the regulatory role of Egr1 was examined using siRNA.
Reliability was examined using generalizability theory.
Lineage of cells containing converted kaede was examined using a confocal microscope at 2 dpf.
The silencing efficiency of dsMpNav was examined using real-time quantitative PCR.
Statistical significance was examined using a two-tailed paired T-test analysis.
In parallel, biliary differentiation was examined using the two standard markers CK7 and CK19.
The wall material was examined using FTIR and TGA.
The association was examined using a case-control design.
The carbon ceramic interface was examined using SEM.
Their cytotoxicity was examined using human rhabdomyosarcoma cells (RD cells).
