Short answer: The Depo-Testosterone label has no missed-dose instructions. It sets the dose by response, with a replacement range of 50 to 400 mg every 2 to 4 weeks, and gives a half-life of about 8 days. So a few days late changes levels gradually, not suddenly. Ask your prescriber whether to inject now or wait for your next scheduled day.
| Situation | What the label says |
|---|---|
| Label schedule (replacement) | 50 to 400 mg every 2 to 4 weeks (Dosage and Administration) |
| Missed-dose rule | None in the label |
| Half-life (IM) | About 8 days (Clinical Pharmacology) |
| Route | Intramuscular only, deep in the gluteal muscle |
No. We checked the full prescribing information on DailyMed: it contains no missed-dose section and no catch-up instruction. Anything more specific has to come from your prescriber.
The label's dosing section says the dose is adjusted to the patient's response and side effects, and gives 50 to 400 mg every two to four weeks for replacement in hypogonadal men. Many prescribers now use weekly or twice-weekly schedules within that total; the label itself does not describe those.
The label gives the half-life of intramuscular testosterone cypionate as about 8 days. With a half-life that long, levels fall gradually. A shot a few days late means a few days spent lower in your usual range, not an immediate drop to nothing.
Our TRT steady-state article explains how the half-life shapes the peaks and troughs between injections.
The label does not set a minimum gap between injections. Doubling up stacks two doses on top of each other and raises the peak level. The label also recommends periodic hemoglobin and hematocrit checks during long-term use to detect polycythemia. Ask your prescriber before changing the amount or the spacing.
It can. Testosterone results depend on where in the injection cycle the blood is drawn. If a shot was late, note the real injection date so that whoever reads your labs knows how many days had passed.
The label does not address restarting after a gap. After several weeks off an 8-day half-life ester, levels may be back near your own baseline. Your prescriber may want bloodwork before you restart.
This page summarizes FDA labeling. It is not personalized medical advice; confirm what to do with your prescriber or pharmacist.