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Baseline Nexus (MNT+LPP+MTHFR+Telomere)

The Baseline Nexus panel integrates functional micronutrient testing, lipoprotein particle profiling, MTHFR genotyping, and telomere length measurement. It provides a systems-level snapshot of intracellular nutrient sufficiency, atherogenic particle burden, methylation genetics, and biological ageing, informing personalised nutrition, cardiovascular risk stratification, and longevity…

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Biomarkers

Blood (serum)

Sample

14–21 business days

Turnaround

Yes (12 hours for lipid components)

Fasting

What is the Baseline Nexus test?

The Baseline Nexus panel combines functional micronutrient assessment, advanced lipoprotein particle profiling, MTHFR genotyping, and telomere length measurement into a single consolidated test. It is designed for practitioners practising preventive, functional, and longevity medicine who seek a broad systems-level snapshot of metabolic, cardiovascular, genetic methylation, and biological ageing status. The panel serves as a baseline in comprehensive health optimisation programmes, providing actionable data on intracellular nutrient sufficiency, atherogenic lipoprotein subfractions, genetic variants affecting one-carbon metabolism, and a marker of cumulative oxidative stress and cellular ageing. Because it integrates disparate domains — nutritional biochemistry, lipidology, pharmacogenomics, and geroscience — the test is not ordered for a single diagnosis but rather to inform personalised nutrition, supplementation, cardiovascular risk stratification, and anti-ageing interventions.

What does the Baseline Nexus test measure?

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MNT(Micronutrient Testing (MNT) Panel)
Range: Reported as functional sufficiency for each nutrient (sufficient, borderline, deficient); reference intervals are assay-specific and intracellular.Optimal: Each nutrient is classified as sufficient, borderline, or deficient according to SpectraCell's proprietary functional criteria; no universal 'optimal' range exists across laboratories.Functional sufficiency classification

SpectraCell's micronutrient test evaluates intracellular nutrient sufficiency by stimulating peripheral blood lymphocytes in culture and measuring their functional metabolic performance. This approach assesses the bioavailable fraction of vitamins, minerals, antioxidants, and amino acids required for optimal cellular metabolism, rather than static serum or plasma concentrations. The panel typically reports on B vitamins, minerals (magnesium, calcium, zinc, copper, selenium), vitamins A, C, D, E, K2, coenzyme Q10, lipoic acid, glutathione, serine, oleic acid, and carnitine.

Functional micronutrient assessment informs repletion strategies when serum levels do not correlate with clinical symptoms or when practitioners are investigating fatigue, impaired immunity, cardiovascular risk, or cognitive function that may reflect hidden insufficiency. The intracellular functional approach aims to identify marginal deficiencies missed by standard plasma assays.

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LPP(Lipoprotein Particle Profile)
Range: Varies by lipoprotein class; SpectraCell reports LDL particle number (LDL-P), small dense LDL, HDL particle number (HDL-P), VLDL-3, and mean LDL size.Optimal: Goals vary by cardiovascular risk; a rough guide places LDL-P <1000 nmol/L in low-risk, <800 in moderate, and <700 in high-risk patients; mean LDL size >20.5 nm is favoured.nmol/L (particle number) / nm (particle size)

Lipoprotein particles are the cholesterol- and triglyceride-carrying vehicles in the circulation, and particle number and size provide additional cardiovascular risk stratification beyond standard lipid mass measurements. Small, dense LDL particles are more atherogenic per unit cholesterol than large, buoyant LDL, and LDL-P has been shown to correlate more strongly with cardiovascular events than LDL cholesterol alone. HDL particle number reflects the functional capacity of reverse cholesterol transport.

Particle profiling refines risk assessment in patients with discordant lipid and apolipoprotein results, metabolic syndrome, diabetes, or familial dyslipidaemia, guiding lipid-lowering therapy intensity and monitoring therapeutic response. Small dense LDL and elevated LDL-P identify residual risk even when LDL cholesterol is at target.

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MTHFR(Methylenetetrahydrofolate Reductase Genotype)
Range: Reported as C677T and A1298C genotypes (wild-type, heterozygous, or homozygous variant); not a quantitative measurement.Optimal: Not applicable; result is a genotype. The presence of a variant prompts assessment of homocysteine and folate status and, where indicated, repletion with methylfolate rather than folic acid.Genotype

MTHFR is the enzyme that reduces 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, the methyl donor for homocysteine remethylation to methionine. The C677T variant reduces enzyme thermostability and activity (homozygous ~70% reduction), particularly when folate status is suboptimal. The A1298C variant has a smaller effect on activity. The double heterozygous 677CT/1298AC genotype is also reported.

MTHFR genotyping is ordered when investigating unexplained hyperhomocysteinaemia, recurrent thrombosis, recurrent pregnancy loss, or as part of a personalised nutrition and methylation assessment. The clinical significance of isolated MTHFR variants without hyperhomocysteinaemia is contested; the common polymorphism is not by itself an indication for anticoagulation, and the relationship to disease is context-dependent.

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Telomere(Telomere Length)
Range: Reported as mean telomere length and percentile relative to an age-matched reference population; shorter telomeres are associated with biological ageing and oxidative stress.Optimal: Longer telomeres relative to age-matched peers are desirable; practitioners often target ≥50th percentile, but population reference data vary by assay and laboratory.Mean telomere length (kb) / Percentile for age

Telomeres are repetitive TTAGGG hexanucleotide sequences at chromosome ends that protect coding DNA from degradation. With each cell division telomeres shorten unless telomerase is active, and critically short telomeres trigger senescence or apoptosis. Telomere length in peripheral blood leucocytes serves as a marker of cumulative oxidative stress, inflammation, and biological ageing. Shorter age-adjusted telomere length has been associated epidemiologically with cardiovascular disease, type 2 diabetes, and mortality, though the causal relationship is debated.

Telomere length measurement is used in longevity and preventive medicine to stratify biological age and to motivate or monitor lifestyle interventions. It is an exploratory rather than diagnostic marker; no clinical guidelines recommend routine telomere testing for disease management, and there is considerable inter-individual variability independent of disease.

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TAF(Total Antioxidant Function)
Range: Reported as a composite score reflecting intracellular antioxidant capacity; reference range and interpretation are SpectraCell proprietary.Optimal: Target is a score in the sufficient range as defined by SpectraCell; no universal threshold exists across assays.Functional score

The total antioxidant function score integrates the sufficiency of multiple antioxidant nutrients and enzyme systems (glutathione, vitamins C and E, alpha-lipoic acid, coenzyme Q10, selenium) measured functionally in lymphocytes. It reflects the cell's capacity to buffer oxidative stress rather than a single molecule's serum concentration.

A reduced antioxidant function score may signal heightened oxidative stress or marginal nutrient status in conditions such as chronic inflammation, cardiovascular disease, diabetes, or neurodegenerative disorders. It complements individual micronutrient results by providing a systems-level view of redox balance.

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Immunidex(Immunidex Score)
Range: Proprietary composite score reflecting immune-cell metabolic function; reference intervals are SpectraCell specific.Optimal: A score in the sufficient range as per SpectraCell criteria; no consensus exists outside this assay.Functional score

The Immunidex score integrates functional measures of lymphocyte proliferation and metabolic response under nutritional challenge. It is intended to reflect the adequacy of nutrient support for immune-cell function, including B vitamins, antioxidants, and minerals required for lymphocyte activation and cytokine production.

A low Immunidex may suggest marginal nutrient sufficiency affecting immune resilience, relevant in patients with recurrent infections, chronic viral reactivation, or impaired wound healing. The score is exploratory and complements traditional immune markers.

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SpectrOx(SpectrOx (Oxidative Stress Marker))
Range: Reported as a functional oxidative stress score; higher values indicate greater oxidative burden. SpectraCell proprietary intervals apply.Optimal: Lower scores are favoured; target is within the laboratory's 'low oxidative stress' range.Functional score

SpectrOx quantifies the oxidative damage to lymphocytes by measuring intracellular reactive-species generation and its impact on cellular DNA and lipid membranes. It is a dynamic functional assay intended to reflect the net balance between oxidative challenge and antioxidant defences.

Elevated oxidative stress is implicated in accelerated ageing, cardiovascular disease, neurodegenerative disorders, and metabolic syndrome. The SpectrOx marker informs antioxidant repletion strategies and lifestyle modification, though it is not a substitute for direct markers of tissue damage such as F2-isoprostanes or oxidised LDL.

Why is the Baseline Nexus test ordered?

  • Baseline health optimisation in patients seeking personalised nutrition and lifestyle intervention, where static serum nutrient levels have not explained persistent fatigue, poor recovery, or cognitive symptoms
  • Cardiovascular risk refinement in patients with metabolic syndrome, discordant lipid panels (high LDL-P despite acceptable LDL-C), or familial dyslipidaemia, to guide lipid-lowering therapy
  • Investigation of unexplained or refractory hyperhomocysteinaemia, recurrent venous thrombosis, or recurrent pregnancy loss where MTHFR variants may inform folate repletion strategy
  • Biological age assessment and stratification of oxidative stress in longevity and preventive medicine protocols, where telomere length and antioxidant function inform prognosis and intervention
  • Preconception and fertility evaluation when methylation status, micronutrient adequacy, and oxidative stress may affect gamete quality and pregnancy outcomes
  • Monitoring of complex integrative treatment plans in patients with chronic inflammatory, autoimmune, or neurodegenerative conditions where multiple nutrient and metabolic pathways intersect
  • Sports performance and recovery optimisation, where marginal micronutrient deficiencies, lipoprotein imbalances, and oxidative load affect training adaptation and injury risk
  • Post-bariatric surgery or malabsorptive gastrointestinal disease, where functional nutrient assessment may reveal hidden deficiencies despite normal serum levels

Sample collection and turnaround

Sample type

Blood (serum)

Fasting required

Yes (12 hours for lipid components)

Collection method

Venipuncture at patient service centre

Turnaround

14–21 business days

Collection notes

Phlebotomy required; specimen must be collected in SpectraCell-provided collection tubes and shipped to the laboratory within 24 hours at controlled temperature to preserve lymphocyte viability for functional assays. Patients fast for 12 hours (water permitted) before the draw to ensure accurate lipoprotein particle measurement. Avoid vigorous exercise and alcohol for 24 hours before collection. The specimen is time-sensitive and cannot be redrawn from a stored sample.

Specimen requirements

SpectraCell-provided collection kit with heparin and serum separator tubes; minimum 30 mL whole blood. Specimens must arrive at the laboratory within 24 hours of collection; delayed or compromised samples may be rejected. Temperature-controlled shipping is mandatory.

What can affect Baseline Nexus results?

variableRecent supplementation and dietary intake

Because the micronutrient panel measures intracellular functional sufficiency, acute supplementation may not immediately alter lymphocyte stores; however, chronic high-dose supplementation can mask true baseline status. Ideally, patients hold non-essential supplements for several weeks before baseline testing, though this is rarely practical and the impact varies by nutrient half-life.

variableAcute illness and inflammatory states

Acute infection, surgery, or inflammatory flares alter lymphocyte metabolism and proliferation, potentially affecting functional nutrient scores and oxidative stress markers. Testing is best deferred until the patient is clinically stable.

variableMedications affecting folate metabolism

Methotrexate, trimethoprim, sulfasalazine, and anticonvulsants interfere with folate pathways and may alter the interpretation of MTHFR genotype effects and homocysteine. A full medication history is essential.

reducesLipid-lowering therapy

Statins, fibrates, and ezetimibe lower LDL-C and particle number; the LPP is useful both at baseline and on therapy to assess residual particle burden. Coenzyme Q10 may be depleted by statins, relevant to MNT interpretation.

variableAge and ethnicity

Telomere length and MTHFR variant frequencies vary by age, sex, and ethnicity; reference percentiles are population-specific. MTHFR C677T homozygosity is far more common in Mediterranean and Hispanic populations, where it may have less clinical impact in the context of folate-replete diets.

variableSample handling and lymphocyte viability

The functional micronutrient assay depends on viable lymphocytes; delayed processing, temperature extremes, or specimen transport issues can compromise cell viability and result in indeterminate or artefactually abnormal results. SpectraCell's specimen requirements are strict and must be followed.

What do Baseline Nexus results mean?

Elevated

Elevated LDL particle number or small dense LDL fraction signals heightened cardiovascular risk even when LDL cholesterol is at guideline targets, prompting intensification of lipid-lowering or lifestyle therapy. Elevated oxidative stress scores (SpectrOx) and shortened telomeres relative to age indicate accelerated biological ageing and cumulative oxidative burden, relevant to chronic disease risk and a target for antioxidant, anti-inflammatory, and lifestyle interventions. A low Immunidex or total antioxidant function score, while not 'elevated' numerically, reflects functional insufficiency and prompts repletion.

Normal

Sufficient functional nutrient status, favourable lipoprotein particle profile, and age-appropriate telomere length provide reassurance and a baseline for longitudinal monitoring. A wild-type MTHFR genotype (677CC, 1298AA) does not confer methylation disadvantage, though homocysteine and folate status should still be verified biochemically. Normal results do not exclude disease — cardiovascular events occur across the spectrum of LDL-P, and telomere length is a population marker with wide individual variation.

Reduced

Functional deficiency or borderline status in individual micronutrients (vitamins, minerals, antioxidants, amino acids) signals the need for targeted repletion, whether via diet or supplementation, and serial testing to confirm repletion. A low HDL particle number suggests impaired reverse cholesterol transport. Shortened telomeres below age-matched norms correlate with increased biological age and heightened risk of age-related disease, though causality is debated and the marker serves more to stratify risk and motivate intervention than to diagnose a specific condition.

Note: This is a composite panel spanning multiple physiological domains, and results must be interpreted in clinical context rather than in isolation. The functional micronutrient assay, oxidative stress scores, and telomere length are proprietary to SpectraCell and not directly comparable to assays from other laboratories. MTHFR genotype alone, without hyperhomocysteinaemia, does not mandate anticoagulation or supplementation; the variant's clinical significance is context-dependent and often overstated in direct-to-consumer contexts. Telomere length is an exploratory biomarker with no consensus clinical guidelines for intervention thresholds. Lipoprotein particle data should be integrated with traditional lipids, apolipoprotein B, Lp(a), and cardiovascular risk scores rather than replacing them. All novel or contested interpretations warrant a reviewer flag and clinician oversight before guiding therapy.

Frequently asked questions

Functional micronutrient testing measures intracellular nutrient sufficiency by assessing lymphocyte metabolic performance under culture, reflecting bioavailable nutrient status. Serum levels measure circulating concentrations, which do not always correlate with tissue stores or functional adequacy, particularly for nutrients such as magnesium, B vitamins, and coenzyme Q10.

How to access the Baseline Nexus test

The Baseline Nexus reference page is free and open to all practitioners. Create a free practitioner account to see pricing, save tests to your list, and generate requisition forms. Verification takes 1–2 business days.

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About this page

Published: October 7, 2026

Last reviewed: October 7, 2026

References:
  1. Nordestgaard BG, et al. Lipoprotein(a) as a cardiovascular risk factor: current status. European Heart Journal. (2010)
  2. Mach F, et al. 2019 ESC/EAS Guidelines for the management of dyslipidaemias: lipid modification to reduce cardiovascular risk. European Heart Journal. (2020)
  3. den Hartigh LJ. Conjugated linoleic acid effects on cancer, obesity, and atherosclerosis: a review of pre-clinical and human trials with current perspectives. Nutrients. (2019)
  4. Blom HJ, Smulders Y. Overview of homocysteine and folate metabolism. With special references to cardiovascular disease and neural tube defects. Journal of Inherited Metabolic Disease. (2011)
  5. Blackburn EH, et al. Human telomere biology: a contributory and interactive factor in aging, disease risks, and protection. Science. (2015)
  6. Haycock PC, et al. Leucocyte telomere length and risk of cardiovascular disease: systematic review and meta-analysis. BMJ. (2014)
  7. American College of Medical Genetics and Genomics. MTHFR gene variant and clinical recommendations. (consensus statement, no PMID assigned). (2013)

This content is for licensed healthcare practitioners only and does not constitute medical advice. Clinical decisions should be based on the full clinical picture and not on any single test result.