The phrase "as described per" is correct and usable in written English.
It can be used when referring to information or instructions that have been outlined or specified in a previous document or context.
Example: "Please proceed with the project as described per the guidelines provided in the last meeting."
Alternatives: "as outlined in" or "as stated in".
We evaluated the effects of the RSK-inhibitory Ac-KAla217VD-CHO peptide (American Peptide) on Cyp-2E1 activity as described per manufacturer (Invitrogen).
Library preparation, sequencing, and mapping of reads to the genome performed as described per Illumina and Agilent protocols http://www.illumina.com and http://www.agilent.com.
Comparison of the number of dose/s required to achieve resolution of hypokalaemia (as described per protocol) for each episode of hypokalaemia.
To examine lung metastases, primary tumors were either surgically removed 4 weeks after inoculation or left intact as indicated, and the lungs were extracted as described per experiment.
The arthritis score was determined by erythema, swelling, or ankylosis per paw, as described elsewhere [ 19].
Retroviral gene transfer was performed as described previously (Per et al, 1993).
Following reverse transcription, qPCR was carried out using 5 μl of a 1/10 dilution of the cDNA samples (obtained as described above) per PCR reaction.
Concentration and quality of the RNA samples from 4 biological replicates (RNA prepared as described above) per cell line (MDCK and MDCK-Ras) were determined using the Agilent Bioanalyzer according to the manufacturer's instructions.
We kept the paired structure in the data and used the differences in PC-adjusted DNA methylation values, as described above, per twin-pair in the peak-calling algorithm.
mRNAs and MOs were injected into embryos of the 1 4 cell stage as described (1 nl per embryo) [46].
At day 360, tip-catheter was inserted via Arteria carotis, Arcus aortae, and Valva aortae into the left ventricle as described previously (n≥7 per group) [11].
