The phrase "assay for the quantitative" is correct and usable in written English.
It can be used in scientific or technical contexts when referring to the process of measuring the quantity of a substance or analyte in a sample.
Example: "The laboratory will assay for the quantitative presence of the drug in the patient's blood sample."
Alternatives: "measure the quantity" or "determine the amount".
Quantification of lactate dehydrogenase (LDH) release is a widely accepted assay for the quantitative determination of cell viability and late-stage apoptosis.
We developed the automated Access AMH assay for the quantitative determination of AMH levels on the Access family of immunoassay systems.
The ability of negatively charged phosphatidates to form complexes with Fe3+ ions was used to design a simple spectrophotometric assay for the quantitative determination of phosphatidic acid (PA).
We describe a simple and robust assay for the quantitative detection of prions using immuno-quantitative real-time PCR (iQ-RT-PCR) made possible by a direct conjugate of a prion-specific antibody (ICSM35) and a synthetic 99-bp DNA tail.
The results correlated well with those obtained using the COBAS® TaqMan® HCV Test, which is a real-time PCR assay for the quantitative detection of HCV RNA in human serum (n = 87; range, 2.3 7.7 log10 IU/mL; Pearson's R2 = 0.9120; p < 0.0001).
The purified DNA was used in an assay for the quantitative determination of uracil incorporation following a protocol previously described.
The antibiotics assayed for the quantitative method were penicillin, ampicillin, ceftriazone and claritromycin.
The supernatant collected and were stored at −80 °C until assayed for the quantitative presence of HSP 70.
Automated functional assays for the quantitative determination of PT, APTT, protein C and protein S levels were performed using ACL 9000 Advance Instrumentation (Beckman Coulter, Dublin, Ireland).
To generate and optimize SRM-assays for the quantitative analysis of mesothelin, we followed the strategy proposed by Picotti et al. [ 24] using spectral libraries from chemically synthesized peptide-sequences.
There is an ever-increasing demand for high-throughput, standardized assays for the quantitative detection of multiple infectious agents in different disciplines, ranging from clinical diagnostics, food safety, homeland security, and environmental pest management to the evaluation of treatment efficacy [ 1- 4].
