A method for marking an implantable injection port having a body and an interior cavity covered by a septum, which allows for a determination of a pressure rating of the pressure port from a position implanted within a patient, comprising the steps of: positioning a marker formed of material which is clearly discernible in an X-ray image of a said injection port, in an engagement within said interior cavity or to said injection port; allowing a viewer of said X-ray image to discern a shape of said marker in a said X-ray image and to thereby ascertain a pressure rating of said injection port which is associated with said shape, wherein said marker is chosen from a group of said markers where each respective marker in said group has a respective different non-alphanumeric shape; discerning said respective shape of a viewed said marker in a said X-ray of said injection port when implanted in a patient; employing a lookup table depicting respective shapes of each respective said marker correlated to a respective pressure rating associated with each said shape, to find a depiction of said viewed said marker; ascertaining a pressure rating of said injection port implanted in said patient having said viewed said marker by discerning a respective said pressure rating associated with said viewed said marker, in said lookup table, whereby users speaking any language may use said shape of said marker to ascertain a said pressure rating of said injection port without a language translation, characterised by additionally comprising the steps of: placing an RFID in an engaged position on said body of said injection port or upon a clip configured to engage upon a lumen outlet of said injection port to which it is engaged; communicating RF energy to said injection port when said injection is implanted in a said patient to generate a transmission containing said identification information from said RFID; employing a receiver to receive said transmission and employing said identification information to discern a second determination of a said pressure rating of said pressure port implanted in said patient; and matching said second determination of said pressure rating with said pressure rating associated with said shape of said marker. positioning a marker formed of material which is clearly discernible in an X-ray image of a said injection port, in an engagement within said interior cavity or to said injection port; allowing a viewer of said X-ray image to discern a shape of said marker in a said X-ray image and to thereby ascertain a pressure rating of said injection port which is associated with said shape, wherein said marker is chosen from a group of said markers where each respective marker in said group has a respective different non-alphanumeric shape; discerning said respective shape of a viewed said marker in a said X-ray of said injection port when implanted in a patient; employing a lookup table depicting respective shapes of each respective said marker correlated to a respective pressure rating associated with each said shape, to find a depiction of said viewed said marker; ascertaining a pressure rating of said injection port implanted in said patient having said viewed said marker by discerning a respective said pressure rating associated with said viewed said marker, in said lookup table, whereby users speaking any language may use said shape of said marker to ascertain a said pressure rating of said injection port without a language translation, characterised by additionally comprising the steps of: placing an RFID in an engaged position on said body of said injection port or upon a clip configured to engage upon a lumen outlet of said injection port to which it is engaged; communicating RF energy to said injection port when said injection is implanted in a said patient to generate a transmission containing said identification information from said RFID; employing a receiver to receive said transmission and employing said identification information to discern a second determination of a said pressure rating of said pressure port implanted in said patient; and matching said second determination of said pressure rating with said pressure rating associated with said shape of said marker. placing an RFID in an engaged position on said body of said injection port or upon a clip configured to engage upon a lumen outlet of said injection port to which it is engaged; communicating RF energy to said injection port when said injection is implanted in a said patient to generate a transmission containing said identification information from said RFID; employing a receiver to receive said transmission and employing said identification information to discern a second determination of a said pressure rating of said pressure port implanted in said patient; and matching said second determination of said pressure rating with said pressure rating associated with said shape of said marker.