Requests for three common immunological tests over a 12 month period
| Weeks between requests | ||||||
|---|---|---|---|---|---|---|
| Same day | <1 | >1–2 | >2–4 | >4–8 | >8–12 | |
| 1835 repeat requests related to time since previous sample. | ||||||
| AIS, autoimmune screen; Igs, immunoglobulins; RF, rheumatoid factor. | ||||||
| AIS | 29 | 176 | 65 | 89 | 110 | 110 |
| Igs | 25 | 141 | 76 | 202 | 394 | 164 |
| RF | 35 | 88 | 32 | 57 | 74 | 57 |