Wharton's jelly, exosomes, and PRP are three different things

These three come up in the same conversation constantly, usually as if they were competing brands of the same thing. They are not. They differ in where the material comes from, what is in it, and what has to be true for it to be handled correctly.

PRP

Platelet-rich plasma is made from the patient's own blood, drawn and spun in a centrifuge on the day. It is autologous — it came from the person receiving it — which is why it sits in a different regulatory and logistical world from everything else here.

The practical consequences are mostly about the clinic rather than the biology: a draw, a spin, a preparation step, and staff time on the day. And because it is blood-derived, it is being introduced into tissue that may never have encountered blood before.

Wharton's jelly

Wharton's jelly is the gelatinous connective tissue inside the umbilical cord. It is an extracellular-matrix-rich material — collagen, hyaluronic acid, proteoglycans and growth factors — and it is recovered from full-term births, from screened donors, with no harm to mother or newborn.

It is allogeneic: it comes from a donor, not the patient. That single fact drives the entire apparatus around it — donor screening, serology, processing windows, sterility testing, and the paperwork that has to travel with every lot.

Exosomes

Exosomes are extracellular vesicles — very small membrane-bound packets that cells release, carrying signalling material. They are not cells and they do not divide. They are characterised by count and by the methods used to measure them, which is why credible suppliers quote a specific number of particles per unit and name the analytical method.

A number without a method behind it is a marketing figure. If someone quotes a particle count and cannot say how it was measured, that is the question to keep asking.

Provenance is the whole conversation. Everything else is downstream of where the material came from and what was done to it.

Storage is the practical dividing line

Some of these materials are cryopreserved and must stay frozen until use — which means dry ice, a validated shipper, and somebody physically present to receive it. Others are lyophilized and sit at room temperature until reconstitution.

For a practice, this is often the decision that actually gets made. A clinic without a −80 freezer has not run out of options; it has a shorter list.

The regulatory position, stated plainly

Perinatal biologic products of this kind are not FDA approved for the prevention, treatment, diagnosis, mitigation or cure of any disease. Anyone who tells you otherwise is either confused or selling something.