Tracking how much is left in a vial

The app updates a vial's remaining volume when you log a dose from it. This guide shows where to check the balance, review past draws, and record a volume adjustment.

Screens
1

Open a vial

Open any vial to see how much is left. Remaining is the volume. Doses left turns it into a number of doses.

The app calculates these figures from your logged doses and volume adjustments.

VialEdit
Remaining
2.4 / 4 mL
Active protocols
KLOW
Supply
Doses left12 doses
Concentration20 mg/mL
History
4 mg dose
Today, 9:41 am
2.4 mL
4 mg dose
Tue, 9:03 am
2.6 mL
Starting amount
Jan 3
4.0 mL
2

Log a dose to draw it down

Check Taken from and select the vial you used. Each option shows its remaining volume.

Tap Log dose to save the dose and subtract the amount drawn from that vial. Choose None to log without changing your supply.

Log dose
KLOW
4 mg · 5 on / 2 off
Log details
Date taken
Jan 9, 2026
Time taken
9:41 am
Dose
4mg
Taken from
KLOW vial
20 mg/mL · 2.4 mL left
Draw
20 units
Volume
0.2 mL
0100
Syringe
0.3 mL
0.5 mL
1 mL
3 mL
Injection site?
Left Abdomen
1 day ago
Right Abdomen
3 days ago
Left Thigh
5 days ago
Right Thigh
8 days ago
Left Love Handle
Next
Right Love Handle
Never used
Notes
Anything to remember
Taken from
None
Log without using anything from your supply
KLOW vial
20 mg/mL · 2.4 mL left
KLOW vial
20 mg/mL · 0.4 mL left
3

See it at a glance

Your Inventory shows each vial's remaining volume without opening it.

A vial running low turns red. When it is empty, it moves to your depleted list.

InventoryAdd inventory
Compounds
BAC Water
KLOW
Vial
20 mg/mL
2.4 / 4 mL
Vial
20 mg/mL
0.4 / 4 mL
4

See every draw

The History on a vial lists every change. Each dose steps the volume down.

The number on the right is what was left after that dose.

VialEdit
Remaining
2.4 / 4 mL
Active protocols
KLOW
Supply
Doses left12 doses
Concentration20 mg/mL
History
4 mg dose
Today, 9:41 am
2.4 mL
4 mg dose
Tue, 9:03 am
2.6 mL
Starting amount
Jan 3
4.0 mL
5

Correct the remaining volume

Sometimes the real vial does not match the math, like after a spill, a short draw, or liquid left in the syringe.

Open the vial's History and tap Add adjustment. Enter the volume remaining in mL, add an optional note, and tap Save.

Adjust volumeSave
Set the remaining volume
The app estimates 2.4 mL left. Enter what the vial actually reads now and the app records the difference.
Remaining
0 to 4mL
Note
Optional
6

Remove an incorrect adjustment

After you add an adjustment, it shows up in the History. Tap it to see the change and when it happened.

Adjustments cannot be edited. To remove an incorrect adjustment, tap Delete adjustment in the Danger zone. Deleting it recalculates the vial's remaining volume.

Deletion may be blocked if later doses used volume restored by that adjustment. The app explains why if it cannot be deleted.

Adjustment
Details
Change-0.4 mL
Remaining after2.0 mL
WhenToday, 9:45 am
Note
Some was left in the syringe.
Danger zone
This permanently removes this adjustment and cannot be undone. The vial's remaining volume is recalculated without it.
Delete adjustment
More in Vials and inventory
These guides explain how to use the app. They are for educational purposes only and are not medical advice. Talk to a licensed clinician about your own protocol.