The phrase "served as a reference point" is correct and is commonly used in written English.
You can use it when talking about a point of comparison or a point of reference that is used to make decisions or draw comparisons. For example: "Our baseline results served as a reference point for future experiments."
The quintessential working-class Irish-American neighborhood sandwiched between Times Square and the bustling docks served as a reference point for Moynihan's young life.
Preheated mirror-polished stainless steel substrates served as a reference point for further comparison with rough, cold or bond-coated substrates.
The framework served as a reference point in developing our activities and facilitated our identification and analysis of the students' developments, especially with respect to their group and class discussions.
If the cemento-enamel junction (CEJ) was not visible because of the presence of a restoration (crown, filling), the margin of this restoration served as a reference point.
The taxonomic distribution served as a reference point for investigating the relative contribution of the coral animal and the algal symbionts regarding transcript expression discussed below.
The pretreatment scores served as a reference point and were compared to the scores at posttreatment and 12-month follow-up.
The PSG manager, Laurent Blanc, suggested this result would serve as "a reference point going forward" as they seek to establish themselves as an elite force in the Champions League.
Its completion is a priority for many g7+ countries and serves as a reference point for designing other new deal implementation structures.
The former is produced when testosterone is broken down, while the latter is unrelated to testosterone metabolism, and can thus serve as a reference point for the test.
But the New Orleans agreement is notable for the broad array of issues it addresses; Mr. Holder called the agreement a "critical step forward" that could "serve as a reference point — and a potential model for success — in our future efforts".
Dr. Stephen O'Brien, a geneticist at the National Cancer Institute, said that having the Neanderthal genome would be "a very exciting prospect" because it would serve as a reference point for deciding which genes had been selected for in recent human evolution.
