Table 3

Ratios of test order volumes by defect category (See Methods for explanation)

Raw data (all clients)

Filtered data

All surveyed clients

Surveyed clients not testing in-house


Protein C Functional/Total Ag ratio

1.10

1.09

1.12

1.65

Protein S (Functional+Free Ag)/Total Ag ratio

1.28

1.27

1.21

2.10

Antithrombin Functional/Total Ag ratio

2.10

2.10

2.91

3.50

APC resistance/V Leiden DNA ratio

0.13

0.12

0.15

0.15


Jackson et al. BMC Clinical Pathology 2008 8:3   doi:10.1186/1472-6890-8-3

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