The phrase "a valid surrogate for" is correct and usable in written English.
It can be used when discussing a substitute or alternative that is acceptable or effective in place of something else.
Example: "In this study, we found that the new measurement tool serves as a valid surrogate for traditional methods of assessment."
Alternatives: "an acceptable substitute for" or "a reliable alternative to".
H MRS cannot selectively measure TGs in β-cells; nevertheless, we previously validated whole pancreas TG level as a valid surrogate for β-cells (32).
Fractional flow reserve (FFR) is a valid surrogate for hemodynamic significance in stenotic native coronary arteries, but its validity in patients with coronary stent restenosis is unknown.
We argue that the rat uterus is not a valid surrogate for the human fallopian tube.
Hence, in our model the use of the blink reflex enhancement as an endpoint following GTN infusion, represents a valid surrogate for human migraine pathophysiology.
In view of the non-existence of high-quality post-mortem brain tissue samples to study CNS functioning in vivo, peripheral blood is being proposed as a valid surrogate for genetic studies of migraine [133], along with cerebrospinal fluid, saliva, platelets, plasma and urine to study neurotransmitter function.
Thus, in normal mice the bulk of water is absorbed more proximally in the colon and that encourages us that our measurement of fecal water is a valid surrogate for the signs that are used clinically to define diarrhea.
The task force was criticized for ignoring studies that disputed BMI as a valid surrogate marker for adiposity, and for circuitously basing its reclassification upon opinions and flawed studies authored by its own members, rather than independent studies [2], [3].
Adult C57BL/6 mice are a valid surrogate model for FMDV infections, with features of pathogenesis shared with natural hosts of FMDV [20], [21].
This consistency supports DMARD prescription as a valid surrogate endpoint for chronic arthritis.
Since CV hospitalization is a valid surrogate endpoint for mortality in studies of AF, this is an important finding.
Therefore, the ER+/PgR+ phenotype is considered to be a valid surrogate marker for luminal-like subtypes of breast cancer.
