Drawing from two vials in a protocol

When the vial you're drawing from does not have enough left for a full dose, you can finish it from a second vial. The app splits the draw between the two vials and counts both down.

Screens
1

Start from Today

The Active inventory rail sits at the top of Today. A low vial turns pink and shows how little is left.

Your KLOW dose is due just below. Tap Log dose to take it.

Fri, Jan 9
Good morning
Active inventory2 vials • 1 low
KLOW
Vial
0 doses
KLOW
Vial
20 doses
Today
Today9:00 am
KLOW
4 mg
2

Choose the low vial

When you log the dose, pick the low vial under Taken from. It can't cover a full dose on its own.

The app tells you how much more you need and offers to finish the dose from a second vial. Tap Split across two vials.

Log doseSkip
KLOW
4 mg · 5 on / 2 off
Log details
Scheduled for **Today** at 9:00 am
Date taken
Jan 9, 2026
Time taken
9:41 am
Dose
4mg
Taken from
Vial
20 mg/mL · 0.1 mL left
You need 0.1 mL more to complete this dose.
3

Add the second vial

The app finishes the dose from another vial of the same compound. If you have more than one, you choose which.

A Second vial row appears. The one you started with is now labeled First vial.

Log doseSkip
KLOW
4 mg · 5 on / 2 off
Log details
Date taken
Jan 9, 2026
Time taken
9:41 am
Dose
4mg
First vial
Vial
20 mg/mL · 0.1 mL left
Second vial
Vial
20 mg/mL · 4 mL left
Split across two vials
Total draw
20 units
Volume
0.2 mL
Draw 10 units (0.1 mL) from your first vial to empty it.
0100
Then draw 10 units (0.1 mL) from your second vial.
0100
Syringe
0.3 mL
0.5 mL
1 mL
3 mL
4

Check the draw plan

Scroll to the draw plan. It shows the total and how it splits between the two vials.

Draw everything left in the first vial to empty it. Then draw the rest from the second. Tap Log dose once you have drawn from both.

Log doseSkip
KLOW
4 mg · 5 on / 2 off
Log details
Date taken
Jan 9, 2026
Time taken
9:41 am
Dose
4mg
First vial
Vial
20 mg/mL · 0.1 mL left
Second vial
Vial
20 mg/mL · 4 mL left
Split across two vials
Total draw
20 units
Volume
0.2 mL
Draw 10 units (0.1 mL) from your first vial to empty it.
0100
Then draw 10 units (0.1 mL) from your second vial.
0100
Syringe
0.3 mL
0.5 mL
1 mL
3 mL
5

Review the logged dose

Open the logged dose. The Taken from card lists both vials and how much came from each.

Each row shows 2 mg and 0.1 mL, the two halves of your 4 mg dose.

Dose logEdit
KLOW
KLOW · 5 on / 2 off
Details
Dose4 mg
Scheduled forJan 9, 9:00 am
LoggedJan 9, 9:41 am
Syringe1 mL
Injection siteLower Left Abdomen
Taken from
Vial
2 mg · 0.1 mL
Vial
2 mg · 0.1 mL
6

Open the vial's history

Open either vial from that log. Its History records the dose as a split.

The entry shows how much came from this vial and notes it was split with another.

Vial
Remaining
0 / 4 mL
depleted
History
4 mg dose
2 mg (0.1 mL) from this vial
Split with another vial
Jan 9, 9:41 am
0 mL
4 mg dose
Jan 8, 9:05 am
0.1 mL
4 mg dose
Jan 7, 9:11 am
0.3 mL
4 mg dose
Jan 6, 9:02 am
0.5 mL
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.