Peak
Research & Tracking
TRT Bloodwork & Lab Tracking
Bloodwork on TRT is only useful as a series. A single testosterone number says little without the one before it, the unit it was reported in, and where in your injection week the sample was drawn — and most people's lab history lives as PDFs in an inbox, which is where trends go to die.
Peak turns those reports into per-marker trend lines, converts between ng/dL and nmol/L so results from different labs sit on one axis, and annotates each draw with how long after your last injection it happened.
Everything a lab history needs
Photo lab extraction
Snap the report and Peak pulls out markers, values, units and reference ranges for you to confirm before saving.
Unit conversion built in
ng/dL, nmol/L, pg/mL and pmol/L convert both ways, so a change of lab never looks like a change in you.
Per-marker trend lines
Open haematocrit, SHBG or oestradiol on its own and see every recorded result in order, with reference bands.
Draw timing annotation
Each result records how many hours after your last injection it was taken, so trough results compare like for like.
Protocol context
Dose changes appear on the same timeline as the labs, so you can see which protocol a result belongs to.
Clinician-ready summary
Export a clean protocol and lab summary to bring to an appointment instead of scrolling a phone gallery.
Labs only make sense next to the dosing that produced them — see the testosterone cypionate tracker for the injection side, or the GLP-1 tracker if you're running semaglutide or tirzepatide too.
Get your lab history out of your inbox
Upload your last few reports by photo and Peak builds the trend lines for every marker, in the units you think in.
Works in any browser and installs to your iPhone home screen — no App Store download needed.
TRT bloodwork questions
Which markers do people on TRT usually follow?
+
The panel most often repeated includes total and free testosterone, oestradiol, SHBG, haematocrit and haemoglobin, plus lipids, PSA where relevant, and liver and kidney function. Peak stores each marker as its own series so you can open one line — haematocrit, say — and see every result you've ever recorded in order, rather than re-reading six PDFs.
Why do my lab results use different units each time?
+
Labs report testosterone in ng/dL or nmol/L and oestradiol in pg/mL or pmol/L depending on the country and the lab, which makes two reports look incomparable when they aren't. Peak converts between them and lets you view the whole history in whichever unit you think in, so a change in lab doesn't create a fake jump in your chart.
Can I upload a photo of my lab report instead of typing it in?
+
Yes. Photograph or screenshot the report and Peak reads the marker names, values, units and reference ranges out of it, then shows you the extracted table to confirm before saving. That is usually the difference between keeping a lab history and intending to.
How does dose timing change how I read a result?
+
A draw taken two days after an injection and one taken at trough describe different points on the same curve, so comparing them directly is misleading. Because Peak already holds your injection timestamps, each result is annotated with how many hours after the last dose it was taken — which makes a like-for-like comparison possible.
Can I share my results with a doctor?
+
Peak generates a clean summary you can export or hand over: current protocol, dose history and lab trends laid out in a clinical format rather than a phone screenshot. It's designed to make a short appointment more productive.
Peak organises and displays lab data you enter. It does not interpret results diagnostically and is not a substitute for review by a licensed clinician.