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Make sense of a lab report

Every change has a second effect

You are holding a lab report, you see unusual lipid or metabolic values, and you were told to watch your diet. Nobody said what exactly to watch. Offset shows which measures move your values and what those same measures cost elsewhere.

Enter your valuesSee an example report: lipidsSee an example report: metabolic

Three values are enough. No registration. Calculated in the browser.

What the offset is

Almost every measure that improves one marker shifts something else. More fish lowers triglycerides and brings purines along, plus mercury depending on the species. More legumes lower ApoB and raise the purine load. Existing blood-value apps show trends. They do not show the price. That price is what we call the offset, and it sits under every measure.

Example: 2 g EPA and DHA per day

Triglycerides 15 to 30 percent lower in studies

Depending on the source an added purine load, mercury from predatory fish, retinol from cod liver oil

How it works

  1. 01

    Read the report

    Read a PDF or enter at least three figures by hand. Every field is optional and you can switch the unit per field.

  2. 02

    Read the ranking

    You get three to four big levers and ten to fifteen small dials below them, ordered by what actually applies at your values.

  3. 03

    Check the trade-offs

    The Offset Map plots measures against markers and makes conflicting goals visible at a glance.

Prepare a doctor visit

Without a report: which values for a first picture aimed at ageing well. With a report: what to bring, which questions follow from the figures, what a standard order often misses.

Open the preparation

Your lab values

Read your report as a PDF, or enter the values by hand. Every field is optional. From three values onwards the ranking is solid enough to be worth showing.

Reference range

Fastest route

Read a PDF report

The files stay in this browser. They are not uploaded. After reading they are discarded from memory. Height and weight are rarely on the report — please add them beside this.

None selected

Height and weight

Rarely on the report — please add it anyway. Optional.

  • cm
  • years

Review values or enter them by hand

Blood lipids

  • Reference < 150

  • Reference > 40

  • Reference < 100

  • Reference < 100

Glucose and insulin

  • Reference < 100

  • %

    Reference < 5.7

  • Reference < 10.0

Iron and uric acid0 of 2 values

  • Reference 15–200

  • Reference < 6.0

Kidney0 of 4 values

  • Reference < 1.20

  • mg/L

    Reference < 1.00

  • mL/min

    Reference > 60

  • mL/min

    Reference > 60

Liver0 of 4 values
  • U/L

    Reference < 33

  • U/L

    Reference < 40

  • U/L

    Reference < 40

  • 10⁹/L

    Reference 150–400

Inflammation and vitamins0 of 3 values
  • mg/L

    Reference < 2.0

  • µmol/L

    Reference < 15.0

  • Reference > 20

Blood pressure0 of 2 values
  • mmHg

    Reference < 130

  • mmHg

    Reference < 80

Inflammation and vitamins0 of 2 values
  • %

    Reference -30–30

  • index

    Reference < 1.30

No established treatment direction — the value moves, and that is not progress.

Further values from the report

Optional. Helps prepare the visit; it does not enter the ranking.

  • Reference < 50

  • %

    Reference 16–45

  • Reference < 190

3 more values until the ranking

Without an account, your values never leave this browser

Lab values are a special category of personal data under Article 9 GDPR. By default we never receive them. Only with a free account and your consent do we store an encrypted history.

Calculated in the browser
The ranking runs entirely in your browser. PDF reports are read locally and never uploaded. Figures leave the browser only after consent and with an account, and then only as ciphertext.
No plaintext on the server
Without an account we store no history. With an account the database holds only an encrypted blob, not a column per lab figure.
Account is optional
You need no registration and no email address to see the result. Saving needs a free account.
No tracking
No analytics scripts, no advertising, no affiliate links, no external fonts. A session cookie is set only after a magic link.

Without an account: no request containing your figures appears in the network panel. With an account the request carries ciphertext only.

How we guarantee this technically

What Offset is not

  • Not a supplement shop with a quiz in front of it. The catalogue, the weight log and the optional weekly mail are free — with no commission on products.
  • Not a diagnosis and not a treatment recommendation. We provide context, we do not judge.
  • Not a blood-value tracker with points and badges. Weight is only a series you keep yourself if you use an account.
  • Not a promise. We give ranges from the literature and the evidence grade behind them, even when it is weak.

Who curates this

The database is curated by hand. The figures below are the current catalogue, not a slogan.

Markers
28
Measures
42
Effect rows
221
Sources
225

Changelog

  1. 2026-10

    Ranking uses the literature point estimate. Rows without a settled size stay visible and do not count. HDL, hs-CRP, homocysteine and vitamin D stay blue, not as progress.

  2. 2026-09

    Borderline badges removed. Study spans instead of point forecasts. Reporting without an account. FIB-4 and eGFR discrepancy taken out of the consumer product.

  3. 2026-08

    Consolidated-3 import: lifestyle levers, hidden raisers and prescription context with sources.