The interval.
And the question.
A laboratory reference interval describes results for a particular assay and population. This checker compares eight biomarkers with source-labeled examples and keeps historical criteria separate. Whole-blood histamine has one documented historical comparison here; other markers have no verified universal optimal interval. An optional personal band remains a user-defined comparison, rather than a validated treatment target.
Jones & Barker, 2008, Clinical Biochemist Reviews 29(Suppl1):S93–S97 Walsh, Glab & Haakenson, 2004, Physiology & Behavior 82:835–839
01 / YOUR INPUTS
Start with the report.
Match the specimen, assay and population to the report you are reading.
Add a personal comparison band optional
A chosen band is user-defined. It does not become a validated clinical target.
Your entries stay in this browser. They are not attached to waitlist submissions. Download or copy a scorecard only when you choose.
02 / THE COMPARISON
The number,
with its context.
Enter or select the information on the left to see a source-labeled comparison.
The result will retain the units, source and limits relevant to this comparison.
KEEP THE SOURCE BESIDE THE NUMBER
Reference is
not prescription.
The examples below belong to named assays, specimens and populations. Whole-blood histamine’s historical comparison is identified separately. For the other seven markers, a universal orthomolecular optimum was not verified.
| Marker / specimen | Laboratory example | Historical comparison / scope |
|---|---|---|
| HomocysteinePlasma preferred; serum acceptable | Labcorp706994; ages18–600–14.5 µmol/L | No universal optimal interval verified. |
| Vitamin C — plasmaPlasma | Labcorp001805; plasma0.4–2 mg/dL | No universal optimal interval verified. |
| Whole-blood histamineWhole blood | Labcorp081315 dated2023 sample report12–127 ng/mL | 40–70 ng/mLWalsh et al., 2004; uncontrolled cohort criterion, not a universal adult diagnostic interval. |
| FerritinSerum | Quest457; men ages19–5938–380 ng/mL | No universal optimal interval verified. |
| 25-OH vitamin DSerum | Labcorp081950; updatedSeptember202620–100 ng/mL | No universal optimal interval verified. |
| Vitamin B12Serum | Labcorp001503232–1245 pg/mL | No universal optimal interval verified. |
| RBC magnesiumRed blood cells | Labcorp080283; RBC3.7–7 mg/dL | No universal optimal interval verified. |
| Fasting insulinSerum | Labcorp004333; fasting2.6–24.9 µIU/mL | No universal optimal interval verified. |
Histamine’s laboratory example comes from a dated 2023 sample report, not a current interval published on the live assay page. Use the interval on the report from the laboratory performing the test.
READ THE ORIGINALS
Sources, within reach.
- Jones & Barker, 2008, Clinical Biochemist Reviews 29(Suppl1):S93–S97Reference-interval methods and assay/population context
- Walsh, Glab & Haakenson, 2004, Physiology & Behavior 82:835–839Uncontrolled, individualized multicomponent intervention cohort; 207 patients, median age11.5
- Levine et al., 1996, PNAS 93:3704–3709Human depletion/repletion pharmacokinetic study; not a universal optimum for every biomarker
§ 06 EARLY ACCESS
"In normal range" was
never really an answer.
Join the early-access waitlist and get instant access to our Orthomolecular Optimal vs. Standard Lab Reference Sheet.
You're on the list.
Your lab reference sheet is ready: ten markers, assay-specific ranges, primary sources and the limits of proposed optimal targets.
Download the reference sheet ↓STEP 01 / HELP SHAPE THE APP