Freeze-Dried Plasma: The Shelf-Stable Half of Resuscitation

The Problem With the Cold Chain

We have spent the last decade arguing for blood in the field, and we were right to. But anyone who has actually stood up a prehospital whole blood program knows the real enemy isn't the clinical evidence, it's the logistics. Low-titer O whole blood (LTOWB) needs continuous refrigeration, validated coolers, temperature logging, and a rotation pathway back to the hospital before it outdates. For a rural service running two trucks, that cold chain is the single biggest barrier between a bleeding patient and the products that keep them alive.

Freeze-dried plasma (FDP) attacks that problem from a different angle. It doesn't replace whole blood, it covers the gap where whole blood can't physically go.

What FDP Actually Is

FDP is plasma that has been lyophilized, frozen and then dried under vacuum so the water sublimates away, leaving a stable cake of coagulation factors in a bottle. At the point of need you add sterile water, swirl, and you have functional plasma in under six minutes. No thawing, no freezer, no validated cooler.

The French Armed Forces have run this playbook for decades. French Lyophilized Plasma (FLYP), produced by the French Military Blood Institute, is type-compatible across all blood groups, stores at room temperature for up to two years, and since 2010 carries a photochemical pathogen-inactivation step. It has been used to resuscitate U.S. Special Forces casualties downrange, and for years the U.S. military purchased units directly from the French service because we had no domestic equivalent.

That is starting to change. In August 2024 the FDA issued an Emergency Use Authorization for a freeze-dried plasma product (octaplasLG Powder) for hemorrhage and coagulopathy in U.S. military combat operations. Civilian approval in the United States still requires the standard phase trials, so for now domestic FDP is a military and investigational product, not something on your civilian rig yet.

Why Plasma, and Why Early

To understand where FDP fits, you have to understand trauma-induced coagulopathy. A severely injured, bleeding patient isn't just losing red cells, they are consuming and diluting clotting factors, going acidotic, and getting cold. That lethal triad turns a survivable injury into an unsurvivable one. Crystalloid makes it worse, it dilutes what little clotting capacity is left.

Balanced resuscitation means replacing what's lost in something close to physiologic proportion: red cells, plasma, and platelets. Whole blood does all of that in one bag. When you don't have whole blood, plasma is the component that restores clotting factors and supports the endothelial glycocalyx. FDP lets you push that plasma at the point of injury instead of waiting for the trauma bay.

Where It Sits in MARCH

For field providers, FDP lives in the C of the MARCH algorithm, Circulation, right alongside tourniquets, wound packing, and the decision to give blood products. The sequence is familiar: control the bleeding you can see (Massive hemorrhage), secure the Airway, address Respirations and tension physiology, then address Circulation with balanced product, and keep the patient warm to fight Hypothermia.

FDP doesn't compete with pushing TXA in the field, the two are complementary. TXA stabilizes the clot you form by inhibiting fibrinolysis; FDP gives you the factors to form that clot in the first place. Give the TXA early, give the plasma early, and reserve red cells for the patients who are clearly exsanguinating. That is the layered approach a modern hemorrhage protocol is built on.

The honest caveat: the randomized evidence for FDP improving hard outcomes over standard care is still thin, and reviewers have been clear about that. But the logistical argument is overwhelming for the austere and rural settings where whole blood simply cannot reach. FDP is the shelf-stable half of resuscitation, the half that fits in a jump bag and survives the back of a hot truck.

Sources

• Transfusion (Wiley) — Lyophilized plasma in French Armed Forces remote damage control
• CMAJ — Dried plasma for trauma resuscitation: military to civilian and rural
• FDA — Emergency Use Authorization for freeze-dried plasma product
• Prehospital Emergency Care (PubMed) — Prehospital Freeze-Dried Plasma in Trauma: A Critical Review
• USAMRDC — U.S. and France join forces to expand freeze-dried plasma