Table 1.

Test usage across the two sites

	Abingdon	Oxford
Implementation period	11/11/16–2/7/17	7/1/17–2/7/17
Successful blood tests	48, at 41 contacts	6, at 6 contacts
Failed attempt at blood tests	11	5
Number of potentially appropriate home visits	1495	833
Proportion of home visits where successful blood test performed	2.7%	0.7%
Type of cartridges used*	38 Chem8 10 CG4	5 Chem8 1 CG4
Types of clinicians who performed tests	28 Emergency practitioners 13 GPs (one with healthcare assistant support)	5 GPs (three with healthcare assistant support) 1 Emergency practitioner
Timing of tests
Overnight 00:00–08:00 hours  Evening 18:00–00:00 hours  Daytime† 8:00–18:00 hours	10  8  23	0  1  5

*The CHEM8 cartridge measures sodium, potassium, chloride, total carbon dioxide (TCO2), anion gap, ionised calcium, glucose, urea, creatinine, haematocrit and haemoglobin. The CG4 cartridge measures lactate, pH, PaO2 and PCO2, TCO2, bicarbonate, base excess and oxygen saturation.

†Daytime contacts were limited to Saturdays, Sundays and public holidays.