Peptide Level Determination

Peptide Level Determination for Research, Diagnostics & Therapeutics

 

Let our scientists run the assay for you.

Accurate peptide quantification is essential for meaningful scientific insights. Phoenix Pharmaceuticals offers expert peptide level determination services designed to support researchers, clinicians, and pharmaceutical developers in obtaining precise, reproducible peptide measurements from biological samples and formulations.

With decades of experience in peptide chemistry and assay development, our team delivers high-quality peptide quantification tailored to your study’s requirements.

 

What Is Peptide Level Determination?

Peptide level determination refers to the accurate measurement of specific peptide concentrations in various sample types, such as plasma, serum, tissue extracts, or pharmaceutical formulations. This data is critical for pharmacokinetic (PK) studies, drug development, biomarker validation, and a wide range of clinical and preclinical research applications.

 

What sample types can be assayed?

Peptide levels in any biological sample can be measured. Any biological sample can be accurately assayed, including plasma, serum, tissue, and CSF.

 

How will our samples be prepared?

Our experienced team can help determine the optimal sample preparation procedure. For example, we often recommend performing peptide extraction for most sample types. This helps remove large proteins normally found in biological fluids that can casue high background noise (e.g. hemoglobin, albumins, clotting factors). Additionally, extracted samples can be concentrated, which is essential for peptides and hormones with low normal circulating levels.

 

How much will it cost?

Pricing starts at $20 per sample when assaying samples in bulk. We also offer sample extraction-only services. Please contact us to receive a price quote.

 

Above is an example of the data and analysis you can expect when using our services. Human plasma samples were assayed before and after feeding in order to establish a correlation between Irisin and energy metabolism.

 

Who Uses This Service?

Our peptide level determination services are widely used by:

• Academic Research Laboratories
  Studying peptide-based signaling pathways, hormones, or biomarkers.
• Hospitals & Clinical Research Centers
  Monitoring therapeutic peptides, patient biomarker levels, or disease progression.
• Pharmaceutical & Biotech Companies
  Performing pharmacokinetic analysis, formulation validation, or release testing for peptide-based drugs.
• Veterinary & Agricultural Researchers
  Investigating peptide roles in animal health and plant systems.

How Peptide Level Determination Works

Phoenix Pharmaceuticals utilizes advanced enzyme immunoassays (EIAs) and validated ELISA kits – developed in-house—to quantify peptide levels with high specificity and sensitivity.
We offer:

• Custom and Pre-Validated Assays
  Use your own peptide sequence or choose from our library of validated kits for known peptides.
• Flexible Sample Matrices
  Compatible with plasma, serum, cell culture supernatants, tissue homogenates, and more.
• Quantitative, Reproducible Results
  Standard curves, control samples, and duplicate measurements ensure accuracy and consistency.

For peptides where immunoassays may not be feasible, we can consider mass spectrometry-based quantification on a custom trial basis.

 

What Makes us the Best for Peptide Level Determination?

• Over 30 Years of Experience in peptide science
• Custom Assay Development for novel peptides
• Reliable Turnaround Times to keep your research on track
• Dedicated Technical Support from peptide experts
• GMP facility where cGMP manufacturing projects can be considered

 

Applications of Peptide Quantification

• Hormone level monitoring (e.g., insulin, GLP-1, oxytocin)
• Drug development & dose optimization
• Pharmacokinetic (PK) and pharmacodynamic (PD) studies
• Disease biomarker tracking
• Quality control in peptide production

 

Start Your Peptide Level Determination Project Today!

Need to measure peptide concentrations in your study samples? Phoenix Pharmaceuticals is ready to help. Our scientists will work with you to identify the best assay format and deliver high-confidence data.

Please contact us to receive a price quote.