Benson 1992 PSA density

Benson 1992 PSA density: psa_ng_ml / prostate volume (ml). Volume is length_cm × width_cm × depth_cm × 0.5 (D1×D2×D3×1/2), not π/6. Provide PSA with prostate_volume_ml (1-500) or three dimensions (1-20 cm each), not both. Reports dimensionless psad to 3 decimals and retrospective bands <=0.05, 0.05-0.10, >=0.10. magent does not measure the gland or diagnose cancer. Not a medical device.

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Endpoint

POST https://api.magentlab.com/api/calc/psad

Our checks, last 30 days

Example input (from the provider)

{
  "body": {
    "items": [
      {
        "depth_cm": 4,
        "length_cm": 4,
        "prostate_volume_ml": 40,
        "psa_ng_ml": 4,
        "width_cm": 4
      },
      {
        "depth_cm": 4,
        "length_cm": 4,
        "prostate_volume_ml": 40,
        "psa_ng_ml": 4,
        "width_cm": 4
      }
    ]
  },
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "items": {
              "items": {
                "properties": {
                  "depth_cm": {
                    "description": "Prostate depth (D3) in cm (1-20). Required with length_cm and width_cm when prostate_volume_ml is omitted.",
                    "type": "number"
                  },
                  "length_cm": {
                    "description": "Prostate length (D1) in cm (1-20). Required with width_cm and depth_cm when prostate_volume_ml is omitted. Benson volume = L\u00d7W\u00d7D\u00d70.5.",
                    "type": "number"
                  },
                  "prostate_volume_ml": {
                    "description": "Caller-supplied prostate volume in ml (1-500). Provide this or length_cm, width_cm, and depth_cm, not both. magent does not measure the gland.",
                    "type": "number"
                  },
                  "psa_ng_ml": {
                    "description": "Serum prostate-specific antigen in ng/ml (0.01-10000, magent clamp). magent does not assay PSA.",
                    "type": "number"
                  },
                  "width_cm": {
                    "description": "Prostate width (D2) in cm (1-20). Required with length_cm and depth_cm when prostate_volume_ml is omitted.",
                    "type": "number"
                  }
                },
                "required": [
                  "psa_ng_ml"
                ],
                "type": "object"
              },
              "maxItems": 25,
              "minItems": 1,
              "type": "array"
            }
          },
          "required": [
            "items"
          ],
          "type": "object"
        },
        "headers": {
          "additionalProperties": {
            "type": "string"
          },
          "type": "object"
        },
        "method": {
          "const": "POST",
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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