Test unit costs, repeat intervals, and turnaround times
| Test | TAT (days) | Unit cost* | Repeat interval | References for justification of repeat interval |
|---|---|---|---|---|
| *In US$. | ||||
| ADNA, anti-double stranded DNA antibodies; AENA, anti-extractable nuclear antigen antibodies; AFP, α fetoprotein; AGPC, anti-gastric parietal cell antibodies; AMA, anti-mitochondrial antibodies; ANA, antinuclear antibodies; ASM, anti-smooth muscle antibodies; CEA, carcinoembryonic antigen; PSA, prostate specific antigen; RF, rheumatoid factor; TAT, turn around time. | ||||
| ANA | 3 | 21 | 4 weeks | 44−46 |
| AENA | 4 | 13 | 4 weeks | 44−46 |
| ADNA | 6 | 11 | 6 weeks to 6 months | 6−12 weekly for active |
| 6−12 monthly for inactive46,50 | ||||
| RF | 3 | 4 | 4 weeks | Except in Sjögren’s syndrome44,45,46,51,52 |
| AMA | 8 | 9 | 4 weeks | 53−60 |
| ASM | 8 | 9 | 4 weeks | 53−60 |
| AGPC | 8 | 9 | 4 weeks | 61, 62 |
| IgG, IgA, IgM | 3 | 7 | 4 weeks | 63, 64 |
| AFP | 3 | 6.5 | 12 weeks | 65−69 |
| CEA | 3 | 6.5 | 12 weeks | 65, 67, 70−77 |
| CA15.3 | 3 | 7.5 | 12 weeks | 67, 70, 78 |
| PSA | 4 | 7.5 | 12 weeks | 65, 67, 79 |