Lab ranges

15 entries

8-hydroxy-2-deoxyguanosine (8-OHdG) — lab reference

Urine/plasma method, creatinine correction, collection timing, and assay matter.

Antioxidant Protection Assay (APA) — lab reference

Your APA report defines its own protection categories. Ask how your result relates to your current health and other findings.

Catalase activity — lab reference

The method can change the result; ask what clinical question the test is meant to answer and whether a repeat would help.

CMA intracellular micronutrient panel — lab reference

Your CMA report uses its own testing method and categories. Ask what a category means for you; this page does not set a personal severity level or treatment target.

Cytokine panel — lab reference

Ask your clinician to define genes/analytes, specimen, assay, repeatability, and how results change management.

F2-isoprostanes — lab reference

Urine/plasma and mass-spec/immunoassay results are not interchangeable.

Genetic variants / SNP findings — lab reference

Classify by evidence, zygosity, phenotype, and clinical actionability rather than a numeric range.

GSH/GSSG ratio — lab reference

This ratio is useful only when both measurements were made using a reliable paired method.

Heavy metals, blood or urine — lab reference

Specimen choice, timing, recent seafood/supplements, provoked vs unprovoked collection, and public-health thresholds matter.

Myeloperoxidase (MPO) — lab reference

Assay and indication-specific.

Oxidized glutathione (GSSG) — lab reference

The test method and how the sample is protected after collection can affect this number.

Oxidized LDL — lab reference

Ask your clinician to use exact laboratory interval. Clinical utility and treatment targets are not universally standardized.

Reduced glutathione (GSH) — lab reference

Ask your clinician to specify whole blood, RBC, plasma, or intracellular method. Preanalytic handling is critical.

Superoxide dismutase activity — lab reference

RBC, plasma, and cellular assays are not interchangeable.

TMAO — lab reference

Diet, kidney function, microbiome, timing, and assay affect results.

About these ranges

These are Dr. Purser’s adult reference ranges. Units, symptoms and health history matter when you discuss a result with your clinician.