About KLOW
KLOW is a four-peptide research blend. Each Biogenesis Labs 80 mg vial contains 50 mg GHK-Cu, 10 mg BPC-157, 10 mg TB-500 and 10 mg KPV, supplied as lyophilized powder for laboratory research use only.
Research-grade vials: KLOW 80 mg. Every batch is independently tested — see the Certificates of Analysis.
How to calculate KLOW concentration
concentration (mg/mL) = KLOW in vial (mg) ÷ diluent volume (mL)
- An 80 mg KLOW vial with 4 mL of bacteriostatic water is 20.00 mg/mL (20,000 mcg/mL).
- On a U-100 syringe, 100 units = 1 mL, so each unit holds 200.0 mcg.
- Use 5 mL instead and the same vial reads 16.00 mg/mL, or 160.0 mcg per unit. More diluent lowers the concentration; the KLOW in the vial does not change.
For U-40 syringes (40 units = 1 mL), divide mcg/mL by 40 instead of 100. The calculator above switches between both scales.
KLOW blend breakdown
Live readout for each peptide in the vial, using the vial mg, diluent volume, syringe type and unit count entered in the calculator above.
| Peptide | mg in vial | mg / mL | mcg per U-100 unit | mcg in units drawn |
|---|---|---|---|---|
| GHK-Cu | 50.00 | 12.50 | 125.0 | 1,250 |
| BPC-157 | 10.00 | 2.50 | 25.0 | 250 |
| TB-500 | 10.00 | 2.50 | 25.0 | 250 |
| KPV | 10.00 | 2.50 | 25.0 | 250 |
KLOW reconstitution chart
Total and per-peptide concentration for the 80 mg KLOW vial across common diluent volumes. The second figure in each cell is mcg per unit on a U-100 syringe.
KLOW 80 mg vial
| Diluent | KLOW total | GHK-Cu | BPC-157 | TB-500 | KPV |
|---|---|---|---|---|---|
| 2 mL | 40.00 mg/mL 400.0 mcg / unit | 25.00 mg/mL 250.0 mcg / unit | 5.00 mg/mL 50.0 mcg / unit | 5.00 mg/mL 50.0 mcg / unit | 5.00 mg/mL 50.0 mcg / unit |
| 3 mL | 26.67 mg/mL 266.7 mcg / unit | 16.67 mg/mL 166.7 mcg / unit | 3.33 mg/mL 33.3 mcg / unit | 3.33 mg/mL 33.3 mcg / unit | 3.33 mg/mL 33.3 mcg / unit |
| 4 mL | 20.00 mg/mL 200.0 mcg / unit | 12.50 mg/mL 125.0 mcg / unit | 2.50 mg/mL 25.0 mcg / unit | 2.50 mg/mL 25.0 mcg / unit | 2.50 mg/mL 25.0 mcg / unit |
| 5 mL | 16.00 mg/mL 160.0 mcg / unit | 10.00 mg/mL 100.0 mcg / unit | 2.00 mg/mL 20.0 mcg / unit | 2.00 mg/mL 20.0 mcg / unit | 2.00 mg/mL 20.0 mcg / unit |
| 6 mL | 13.33 mg/mL 133.3 mcg / unit | 8.33 mg/mL 83.3 mcg / unit | 1.67 mg/mL 16.7 mcg / unit | 1.67 mg/mL 16.7 mcg / unit | 1.67 mg/mL 16.7 mcg / unit |
| 8 mL | 10.00 mg/mL 100.0 mcg / unit | 6.25 mg/mL 62.5 mcg / unit | 1.25 mg/mL 12.5 mcg / unit | 1.25 mg/mL 12.5 mcg / unit | 1.25 mg/mL 12.5 mcg / unit |
| 10 mL | 8.00 mg/mL 80.0 mcg / unit | 5.00 mg/mL 50.0 mcg / unit | 1.00 mg/mL 10.0 mcg / unit | 1.00 mg/mL 10.0 mcg / unit | 1.00 mg/mL 10.0 mcg / unit |
Values are rounded. Figures describe solution concentration only and are not recommendations.
Reconstituting and storing a KLOW vial
Let the sealed vial reach room temperature, swab both stoppers, and run the diluent slowly down the inside wall of the vial rather than onto the powder. Swirl gently until dissolved — don't shake — and label the vial with the concentration and date. Reconstituted solutions are commonly kept refrigerated at 2–8 °C and protected from light. The full step-by-step guide, syringe-scale explainer and BAC vs. sterile water comparison are on the main Peptide Calculator page.
KLOW calculator FAQ
What concentration does an 80 mg KLOW vial with 5 mL of bacteriostatic water give?
16.00 mg/mL (16,000 mcg/mL). On a U-100 syringe that is 160.0 mcg per unit, and 10 units hold 1.60 mg.
What concentration does an 80 mg KLOW vial with 4 mL give?
20.00 mg/mL, or 200.0 mcg per unit on a U-100 syringe.
How much bacteriostatic water should be added to a KLOW vial?
There is no single correct volume. The volume comes from your own research protocol; the calculator and chart show the concentration each volume produces. Only add a volume your vial can hold.
How much of each peptide is in a KLOW vial?
An 80 mg KLOW vial holds 50 mg GHK-Cu (62.5% of the blend) and 10 mg each of BPC-157, TB-500 and KPV (12.5% each).
What is the concentration of each peptide in KLOW with 4 mL of diluent?
The total is 20 mg/mL. GHK-Cu is 12.5 mg/mL (125 mcg per U-100 unit), and BPC-157, TB-500 and KPV are each 2.5 mg/mL (25 mcg per U-100 unit).
How do I calculate one peptide's concentration in the blend?
Multiply the total concentration by that peptide's share of the vial. With 5 mL the total is 16 mg/mL, so GHK-Cu is 16 × 0.625 = 10 mg/mL and each 10 mg peptide is 16 × 0.125 = 2 mg/mL. The blend breakdown table does this automatically.
Does this KLOW calculator provide dosing guidance?
No. It performs concentration and unit-conversion math only. All Biogenesis Labs products are supplied for laboratory research use only and are not for human consumption.
