The phrase "ascertain its origin" is correct and usable in written English.
You can use it when you want to determine or find out where something comes from or its source.
Example: "The researchers aimed to ascertain its origin to better understand the historical context of the artifact."
Alternatives: "determine its source" or "identify its origin."
"...Until the debris has been examined by experts, it is not possible to ascertain its origin".
As the encapsulation process was detected in a high number of lesions, an analysis of factors possibly associated with it was performed in order to ascertain its origin; the results are presented in Table 3.
Espinosa de los Monteros et al. (1999) strengthen the usefulness of the coordinate expression of CK7 and CK20 to distinguish different primary feline carcinomas and to ascertain its origin, in case of metastatic disease; they also described the normal pattern of these CK in feline normal endometrium [ 32].
(A ) Schematic representation of the in vivo YFP interference strategy (iYFPi) to knock-down expression of YFP-trapped Perlecan (Trol-YFP) and ascertain its tissue of origin.
At the beginning of the trial, the company granted compensation for any disease to all employees, without ascertaining its occupational origin.
A large number of species-specific inter-simple sequence repeat (ISSR) markers were found in B. gymnorrhiza and B. sexangula, and the additive ISSR profiling of B. × rhynchopetala ascertained its hybrid status and identified its parental origin.
But having a terrestrial, and not a celestial origin, we find no difficulty in ascertaining its meaning in all the parts which we allege to relate to slavery".
On Thursday night, detectives allowed senior figures from London's Somali community to meet Omar in his Paddington Green station in an unsuccessful attempt to ascertain his origins and whether in fact his parents survived the bloody fighting in Somalia.
We also scrutinized the methods section of all the original articles to ascertain the origin of data with special emphasis on whether the research was carried out in RoW countries.
In order to ascertain the origin of the efflorescence it would be of interest to look first at the content of inorganic components in wood.
It is difficult to ascertain the origin of the water mass that reached Currimao because the difference in Δ14C between Guam and Con Dao became smaller after the mid-1980s compared with that in the 1970s, although the Δ14C value in Con Dao was annual.
