USP-S | Serum
USP-S | Serum is a Classified skin available from the CS:GO Weapon Case 2.
What case is this from?
Trade up to USP-S | Serum
10 Restricted skins from the CS:GO Weapon Case 2 collection can produce it. See every route, its odds and the input float each wear needs.
Trade up from USP-S | Serum
10 Classified skins, this one included, trade up into one Covert skin from the inputs' collections. From the CS:GO Weapon Case 2, the possible outcomes are:
USP-S | Serum: drop odds, wear & source-case value
USP-S | Serum is one of 2 Classified skins in the CS:GO Weapon Case 2. The CS:GO Weapon Case 2 pays out Classified tier 3.197% of the time (1 in 31.3), and DropLabz's model treats every skin in a tier as equally likely, so this skin's base chance is about 1.598% per opening (1 in 62.6).
The base chance is the probability the opening lands on this skin at all, before its wear is rolled and before the 10% StatTrak roll (this skin is StatTrak-eligible). It is not the chance of a particular wear or a specific float.
| Wear | Chance, given this skin | Snapshot price | StatTrak price |
|---|---|---|---|
| Factory New | 28.0% | $143.97 | $100.99 |
| Minimal Wear | 32.0% | $85.84 | $64.83 |
| Field-Tested | 40.0% | $72.63 | $63.63 |
Modeled wear chances assume uniform floats across the skin's range. They are not verified in-game wear rates; see the model assumptions and limitations. Prices are from a Steam Community Market snapshot dated Oct 27, 2026, 10:25 AM UTC; a dash means no price in the snapshot.
Related skins
More USP-S skins · USP-S skins under $100 · Best CS2 skins under $100 · Curious about the odds of pulling this? See CS:GO Weapon Case 2 odds & contents or open it in the simulator.