Lab Results Trend Tracker

A transparent, offline tool to log, visualize, and understand changes in your lab results over time. Designed for individuals monitoring wellness metrics (like cholesterol, blood sugar, or vitamin levels) to build context, spot patterns, and prepare better questions for healthcare visits.

Note: Educational tool only. Does not diagnose, treat, or replace professional medical advice.

Why Tracking Lab Trends Matters

A single lab result is a snapshot; trends over time tell the story. Small changes might signal early shifts in your health, while stability can provide reassurance. This tool helps you visualize that story.

How to Use This Tracker

Select the lab test you're tracking (e.g., LDL Cholesterol).
Enter the date and value from your report. Double-check the unit.
Add notes for context (fasting, time of day, recent lifestyle changes).
Repeat for each historical result you have.
Review the Trend Summary for rate of change and pattern description.
Use the log table to see all entries at once.

Realistic Examples

Example 1: Glucose Monitoring

Jan 15: 95 mg/dL (fasting)
Apr 20: 102 mg/dL (fasting)
Jul 10: 108 mg/dL (fasting)

Trend: Slow upward creep (~6.5 mg/dL per year). Worth discussing dietary habits.

Example 2: Vitamin D

Mar 2023: 22 ng/mL (deficient)
Sep 2023: 35 ng/mL (after supplementation)
Mar 2024: 42 ng/mL (maintenance dose)

Trend: Clear improvement and stabilization. Shows supplementation response.

Common Reference Ranges & Conversions

Test	Typical Reference Range (General Adult)	Key Unit Conversion
Glucose (fasting)	70–99 mg/dL (3.9–5.5 mmol/L)	1 mmol/L ≈ 18 mg/dL
LDL Cholesterol	< 100 mg/dL optimal (< 2.6 mmol/L)	1 mmol/L ≈ 38.7 mg/dL
Vitamin D	30–50 ng/mL (sufficiency) (75–125 nmol/L)	1 ng/mL ≈ 2.5 nmol/L

Important: Reference ranges vary by lab, age, sex, and health status. Always refer to the ranges on your own report.

Frequently Asked Questions

How accurate is the trend calculation?

The tool calculates a simple linear trend (best-fit line) based on the dates and values you enter. It gives you an approximate rate of change per month/year. It does not account for lab assay changes, biological variability, or seasonal effects.

What if my lab uses different units?

Use the Quick Unit Converter above to convert a value before logging it. Ensure all entries for one test are in the same unit for accurate trend analysis.

When should I be concerned about a trend?

A consistent trend moving outside the typical reference range, or a rapid change even within range, warrants a discussion with your clinician. Sudden spikes/drops should be evaluated promptly.

How many results can I log?

The tool stores data only in your browser's memory for the current session. Closing the page will erase the log. For long-term tracking, manually record the summary or use a dedicated health app.

Lab Results Trend Tracker

Log & Analyze Trends

Trend Analysis

Current Selection

Trend Summary

Interpretation Guide

Your Logged Results

Quick Unit Converter

Menu

Lab Results Trend Tracker

AI Assistant

Was this tool helpful?