Pedplot

HCG plotter

Half-life estimate, not bloodwork or dosing advice. Disclaimer.

t½ 1.5dTmax 0.5d100% parent

To step a dose up, add another row of the same compound with a later start day. The chart is remaining active amount, not serum concentration.

Peaks, troughs, and half-life
Estimated remaining IU. Washout continues after the last dose. Mixed IU and mg protocols are not summed.

Chorionic gonadotropin

Peak

829 iu

Trough

414 iu

Swing

50%

~Steady state

7.5d

~Washout

8d

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How to read this chart

HCG. Plotted in IU, not milligrams. Do not add this line onto a milligram total.

The default row models 500 iu as an intramuscular dose, every other day (eod), for 12 weeks.

Also called Chorionic gonadotropin.

The numbers

Half-life1.5d
Time to peak0.5d
Parent hormone100%
Default dose500 iu
Default frequencyEvery other day (EOD)
Default duration12 weeks

What the default curve does

On that default row the model counts 42 doses. Steady state is about day 7.5. Washout runs to about day 8. In the last interval the peak is 829 iu and the trough is 414 iu, a swing of 50%.

How often a dose is still there

A half-life of 1.5d means each dose has mostly cleared before the next daily dose, so the line is a row of spikes.

Closest comparison

Test C has a half-life of 5d against 1.5d on this page.

Where the number comes from

hCG terminal half-life after IM injection is commonly cited around 24–36 hours. How the model works.