PeptideChemSF said:Concentration choice is a precision decision, not a preference.
I am going to disagree with reconstituting low as a general rule. More diluent, more punctures, more in-use days at room temperature, and the stability trade-off is real. Precision is not the only variable being optimised.
WendyG_ATL said:I reconstituted a 10mg vial with 2ml of bacteriostatic water and I want someone to check my unit arithmetic before I draw anything, because I keep…
Just received my dosing arithmetic order — packaging review:
- Outer box: plain brown, no medication identifiers (discreet) ✅
- Inner insulation: Styrofoam with 4 gel ice packs ✅
- Temperature: vials were cold to touch on arrival ✅
- Labeling: lot number, BUD, compound name, concentration ✅
- Included: COA, reconstitution instructions, dosing card ✅
This is what professional compounding pharmacy shipping looks like. If your order arrives without these basics, reconsider your vendor.
DebRD_ATL said:I am going to disagree with reconstituting low as a general rule.
Bacteriostatic water quality matters for dosing arithmetic reconstitution. Not all BAC water is created equal:
- Should contain 0.9% benzyl alcohol as preservative
- Must be sterile and pyrogen-free
- Should come in a sealed, intact vial
- Check expiration date — yes, BAC water expires
- Store at room temperature, protected from light
I buy from a reputable medical supply company, not Amazon marketplace sellers. The $3 savings isn't worth the infection risk from unverified BAC water.
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Shop Reference StandardsFollowing on from DeniseRN_TPA — and this may be the naive question:
How much material I am losing to dead space, and whether that explains why a 10mg vial gives me nine usable draws rather than ten?
Closing the loop on my own question.
Follow-up: it was dead space. Switching to a low-dead-space fixed-needle syringe gave me the tenth dose back.