# Rosenbaum 2012 PBSC Collection Yield Calculator

> Rosenbaum 2012 PBSC Collection Yield Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Calculates predicted daily CD34+ leukapheresis yield using the Rosenbaum 2012 formula with 30% collection efficiency, returning result in ×10^6 cells/kg.

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/pbsc_collection
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rosenbaum-2012-pbsc-collection-yield-calculator-523ae550
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rTeSfAnF80q-tr_LVr-PW

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability rosenbaum-2012-pbsc-collection-yield-calculator-523ae550
```

Example prompt: My patient weighs 72 kg, has a pre-apheresis peripheral CD34 count of 25 cells/µL, and we're planning to process 15 liters — can you use the Rosenbaum 2012 formula to predict the expected daily leukapheresis CD34+ yield in ×10^6 cells/kg?

## When to prefer this

Use this endpoint when you need a deterministic, citation-backed prediction of daily CD34+ leukapheresis yield based on the Rosenbaum 2012 paper specifically (30% collection efficiency). Prefer this over generic apheresis estimators when auditability and a specific published reference is required for clinical documentation or research. Not suitable for choosing collection machines, setting collection goals, or assaying CD34 counts.

## Known failure modes

- Missing required parameters peripheral_cd34_per_ul or processed_volume_l returns an error
- processed_volume_l outside 1–40 L range is clamped by the API
- peripheral_cd34_per_ul outside 0.1–1000 range is clamped
- Weight provided in neither kg nor lb results in an error or default behavior
- Payment failure (x402) if USDC balance is insufficient

## How this service works

Rosenbaum 2012 predicted daily CD34+ leukapheresis yield: (peripheral_cd34_per_ul * 0.30 / weight_kg) * processed_volume_l, as ×10^6 cells/kg. Uses that paper's adjusted collection efficiency of 30% only. Weight via weight_kg or weight_lb. Deterministic published arithmetic with citation. Not an apheresis order; magent does not run the collection, choose a machine, or set a collection goal.

## Output

Returns the predicted daily leukapheresis CD34+ cell yield as a numeric value in ×10^6 cells/kg, computed deterministically from the Rosenbaum 2012 formula: (peripheral_cd34_per_ul × 0.30 / weight_kg) × processed_volume_l. No machine selection, mobilization guidance, or collection goal is included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "required": [
      "peripheral_cd34_per_ul",
      "processed_volume_l"
     ],
     "properties": {
      "weight_kg": {
       "type": "number",
       "description": "Recipient or patient weight in kilograms. Provide weight_kg or weight_lb."
      },
      "weight_lb": {
       "type": "number",
       "description": "Recipient or patient weight in pounds. Converted as kg = lb * 0.45359237."
      },
      "processed_volume_l": {
       "type": "number",
       "description": "Processed blood volume in liters (1-40, magent clamp). Rosenbaum 2012 validated 30 L large-volume leukapheresis and smaller non-LVL collections. magent does not set a processed volume."
      },
      "peripheral_cd34_per_ul": {
       "type": "number",
       "description": "Pre-apheresis peripheral blood CD34+ cells per µL (0.1-1000, magent clamp). Rosenbaum 2012 uses this count with the printed 30% efficiency. magent does not assay CD34."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rosenbaum-2012-pbsc-collection-yield-calculator-523ae550/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.magentlab.com](https://www.zero.xyz/host/api.magentlab.com/llms.txt)