Tracking a Shipment Through Argentine Customs

Once a shipment moves into Argentine customs, tracking runs on two parallel channels: the international courier's tracking number (DHL, FedEx, UPS, or Correo Argentino, depending on who handles the final leg) and the status assigned by ARCA — the Agencia de Recaudación y Control Aduanero, which replaced AFIP — once the parcel enters customs control. The courier's tracking page shows physical movement: arrived at the bonded warehouse, in transit, out for delivery. The customs status shows something different: whether the parcel was selected for verification, which control channel it was routed to, and whether additional documentation is being requested before release.

That distinction is the first thing to understand, because most delays that look like "the package is lost" are actually a change in customs status that the courier's tracking page has not caught up with yet.

What documentation travels with the shipment

Every lot shipped to a destination in Argentina travels with paperwork built so a customs officer can classify the goods without ambiguity: a commercial invoice describing the contents as laboratory reference material for research, and the certificate of analysis (CoA) for that specific batch, issued by the laboratory that ran the assay. That combination — invoice plus CoA — is what an officer needs to assign the correct tariff classification and decide whether any additional control applies.

The certificates of analysis published on this site come from Janoshik Analytical, and the quality page explains how to read one. If a parcel is flagged for documentary review, the CoA is the document an importer or customs broker will need to produce first.

How the customs status itself is tracked

Argentina's customs system assigns every shipment to a control channel as soon as it enters:

• Green channel: the goods are released with no physical inspection and no additional documentary review. This is the most common outcome for small shipments with consistent paperwork.
• Orange channel: the documentation is reviewed — invoice, description of contents, declared value — but the parcel itself is not opened.
• Red channel: the documentation is reviewed and the contents are physically inspected before release.

The channel is assigned automatically, and it is not something the sender or the recipient can choose or predict with any precision. What can be tracked is the outcome: the courier handling clearance (or the customs broker, if the shipment is being processed that way) has visibility into which channel the parcel landed in, and can pass that along to the recipient.

The Single Window for Foreign Trade, and when it comes into play

For certain categories of goods, Argentina's customs system cross-references the classification against the Ventanilla Única de Comercio Exterior (VUCE) — the Single Window for Foreign Trade — where specific agency interventions are handled when they apply. If a shipment has a pending VUCE intervention, the courier's status will often show something generic like "in customs processing" while the actual matter is sitting in a different system. In that case, the useful reference is not the courier's tracking number but the clearance number, or "SIM" (Solicitud de Importación), which can be requested from the courier or the broker to check directly.

Not every shipment goes through VUCE. Most small shipments of laboratory material resolve entirely within the customs channel without needing an intervention from another agency.

How long a shipment can sit in verification

The time a parcel spends under customs control depends on the channel it was assigned to, how much volume customs is processing at that moment, and whether an additional document is requested. There is no fixed timeframe and no figure that can be promised in advance — any number of days quoted elsewhere is usually built on a handful of individual cases, not a real average. What is consistent is the order of events: arrival at the bonded warehouse → channel assignment → (if applicable) a documentation request or physical inspection → release → delivery by the courier.

When a shipment stays in the same customs status for several days with no change, the most direct move is to contact the courier or broker with the waybill number, rather than waiting for the tracking page to update on its own.

What to do if customs requests more documentation

If the system flags a shipment for documentary review or asks for a specific paper, the courier or broker will typically contact the recipient asking for that exact document — usually a copy of the invoice, the CoA, or a clarification on the description of contents. Responding quickly with what was requested is what shortens the process; not responding is the most common reason a parcel sits in the bonded warehouse longer than it needs to.

If the shipment includes a compound like Retatrutide or MOTS-c, the CoA for that specific batch is usually the document that resolves the request, since it states the compound, the declared content, and the result of the purity assay.

Research material, not for human use

Everything shipped under this process is laboratory reference material for research use only (RUO), supplied as lyophilized powder in vials. It is not a medicine, not a supplement, and it is not approved for human or veterinary consumption, diagnosis, or treatment. The customs paperwork reflects exactly that: the shipment is declared and classified as what it is — scientific reference material. Any import process that tries to frame it differently falls outside this shipping model. The full breakdown of how each shipment is prepared is on the shipping page.