| 1 | Profile CN-AD-01 Specialist in plasma amyloid testing | Aβ42 Aβ40 Aβ42/Aβ40 ratio | EDTA plasma; serum only if matrix performance is documented | Ultrasensitive immunoassay or validated mass-spectrometry workflow | Research laboratories and clinical-study screening that require amyloid-focused plasma panels | Lower-limit-of-quantification data, interference study, dilution linearity, recovery, precision, and lot-to-lot comparison | ISO 13485 status where applicable, certificate of analysis, temperature-controlled shipment, human-origin material documentation | Approximately 4–8 weeks after technical confirmation | ★★★★★ |
| 2 | Profile CN-AD-02 Phosphorylated tau assay developer | p-tau181 Total tau | Plasma and cerebrospinal fluid | High-sensitivity immunoassay with calibrator and control materials | Biomarker research programs needing an established phosphorylated-tau target | Antibody specificity, cross-reactivity testing, analytical range, freeze–thaw stability, and comparison with an established reference method | Batch traceability, English technical file, SDS, labeling compliance, and documented cold-chain requirements | Approximately 5–10 weeks | ★★★★★ |
| 3 | Profile CN-AD-03 Emerging p-tau217 platform supplier | p-tau217 Aβ42/Aβ40 | Plasma; cerebrospinal fluid for selected research protocols | High-sensitivity immunoassay or targeted LC-MS/MS assay development | Advanced research groups seeking strong amyloid-pathology discrimination | Epitope definition, clinical-sample performance, assay specificity, reference interval strategy, and independent reproducibility testing | Verify research-use-only status, import classification, stability data, and availability of sufficient pilot lots | Approximately 6–12 weeks | ★★★★☆ |
| 4 | Profile CN-AD-04 Multiplex neurodegeneration panel supplier | Aβ42 Aβ40 p-tau181 NfL GFAP | Plasma, serum, and cerebrospinal fluid subject to matrix validation | Bead-based or electrochemiluminescence multiplex immunoassay | Large cohort studies requiring multiple analytes from a limited sample volume | Singleplex versus multiplex comparison, analyte interaction study, matrix equivalency, plate layout, and batch effect assessment | Request instrument compatibility, reagent shelf life, software files, and quality-control target ranges | Approximately 4–9 weeks | ★★★★☆ |
| 5 | Profile CN-AD-05 Neurofilament light-chain specialist | NfL Total tau | Plasma, serum, cerebrospinal fluid | Ultrasensitive immunoassay suitable for low-concentration neurological biomarkers | Monitoring of neuroaxonal injury and inclusion of a non-specific neurodegeneration marker | Limit of detection, precision at low concentrations, sample stability, hemolysis assessment, and age-related reference data | Validate international unit presentation, calibrator commutability, cold-chain packaging, and data-reporting format | Approximately 3–7 weeks | ★★★★☆ |
| 6 | Profile CN-AD-06 Glial activation biomarker supplier | GFAP NfL p-tau181 | Plasma and cerebrospinal fluid | High-sensitivity singleplex or multiplex immunoassay | Studies evaluating astrocytic activation alongside amyloid and tau pathology | Analytical specificity, clinical correlation, age and renal-function confounder analysis, and reagent stability | Ask for human-serum validation, lot release criteria, transport temperature limits, and residual-sample policy | Approximately 4–8 weeks | ★★★★☆ |
| 7 | Profile CN-AD-07 Targeted mass-spectrometry service provider | Aβ42 Aβ40 p-tau peptides Total tau peptides | Plasma, cerebrospinal fluid, and tissue extracts subject to method validation | Targeted LC-MS/MS with isotope-labeled internal standards | Buyers needing peptide-level specificity and method-development support | Peptide sequence confirmation, calibration curves, carryover, matrix effect, ion-ratio criteria, and inter-day precision | Confirm sample-export permits, biosafety documentation, data-integrity controls, and raw-data delivery | Approximately 8–16 weeks for method setup and validation | ★★★★☆ |
| 8 | Profile CN-AD-08 Ready-to-use research kit supplier | Aβ42 Aβ40 Total tau NfL | Plasma or cerebrospinal fluid depending on the kit protocol | ELISA or automated immunoassay kits with pre-coated plates or cartridges | Universities and laboratories prioritizing accessible workflows and moderate throughput | Protocol recovery, intra- and inter-assay precision, calibrator traceability, expected-value ranges, and manual pipetting tolerance | Check English instructions, SDS, CE or other market-specific status, storage temperature, and expiry period | Approximately 2–6 weeks for stocked items | ★★★☆☆ |
| 9 | Profile CN-AD-09 Custom panel and OEM development supplier | Aβ42/Aβ40 p-tau181 p-tau217 GFAP NfL | Plasma, serum, cerebrospinal fluid, and other matrices after feasibility testing | Custom antibody pairing, multiplex panel design, assay transfer, and private-label packaging without naming a brand in the comparison | Large clinical programs requiring customized analyte combinations or local assay transfer | Development plan, design-control records, feasibility report, verification protocol, change-control procedure, and technology-transfer package | Confirm intellectual-property ownership, confidentiality terms, regulatory pathway, minimum order, and post-launch support | Approximately 12–24 weeks | ★★★☆☆ |
| 10 | Profile CN-AD-10 Biobank-linked biomarker testing service | Aβ42/Aβ40 p-tau181 NfL GFAP | Archived plasma or cerebrospinal fluid with documented pre-analytical history | Central-laboratory testing, aliquoting, sample logistics, and longitudinal biomarker measurement | International researchers needing testing services rather than reagent procurement | Sample consent, storage history, freeze–thaw records, chain of custody, blinded testing procedure, and data-quality audit trail | Verify data-protection obligations, human-sample import rules, ethics documentation, and shipment permits | Approximately 8–20 weeks depending on cohort size | ★★★☆☆ |