A | Units | Low pos | | 1/101 | (OD samples/OD low positive) ×ELISA low positive | Negative | 3 | 4 |

| | | | | | Low | 2 | 9 |

| | | | | | High | 3 | 2 |

B | U/ml | 6 | 0–100 | 1/100 | Log/linear 4 parameter | 1 | 4.7 | 6.2 |

| | | | | | 2 | 2.8 | 8.8 |

| | | | | | 3 | 2.8 | 3.9 |

C | U/ml | 7 | 0–100 | 1/51 | Best fit curve | 1 | 6.3 | 7.3 |

| | | | | | 2 | 6.8 | 9.6 |

D | Units | 5 | 24–305 | 1/40 | Linear best fit curve | – | – | – |

E | U/ml | 6 | 0–100 | 1/101 | Linear plot of normalised OD: OD mean/OD max standard % | 1 | 13.3 | 7.6 |

| | | | | | 2 | 12.1 | 5.6 |

| | | | | | 3 | 13.9 | 5.3 |

F | EU/ml | 4 | 21–170 | 1/101 | Linear/linear best fit curve | 1 | 10.6 | 8.4 |

| | | | | | 2 | 6.5 | 8.7 |

G | EU | 4 | 10–300 | 1/50 | Linear/linear | Low | 10 | 14.7 |

| | | | | | Medium | 2.1 | 8 |

| | | | | | High | 12.4 | 11.9 |

| | | | | | Negative | 0 | 0 |

H | AU/ml | 5 | 5–100 | 1/50 | Log/linear | Low | 8.1 | 9 |

| | | | | | Medium | 4.7 | 5.2 |

| | | | | | High | 2.6 | 5.7 |

I/H | U/ml | 8 | 0–100 | 1/50 | Log/linear 4 parameter | Low | 5 | 7 |

| | | | | | High | 21 | 24 |