| Analytes | 10 ng/mL | 50 ng/mL | 150 ng/mL |
| Diclofenac | −69.0 | −69.9 | −72.1 |
| Fenoprofen | −35.2 | −37.2 | −38.1 |
| Flufenamic acid | −83.7 | −86.4 | −86.2 |
| Flunixin | −8.9 | −16.6 | −17.5 |
| Indomethacin | −60.6 | −62.9 | −62.4 |
| Indoprofen | −12.5 | −6.8 | −2.5 |
| Ketoprofen | −1.3 | −10.0 | −11.8 |
| Ketorolac | −3.9 | −16.0 | −13.3 |
| Meclofenamic acid | −75.7 | −80.8 | −81.8 |
| Mefenamic acid | −76.0 | −78.0 | −77.7 |
| 6-MNA | −32.0 | −35.9 | −36.4 |
| Naproxen | −37.7 | −37.3 | −41.3 |
| Oxyphenbutazone | 145.5 | −3.0 | −15.5 |
| Phenylbutazone | 101.3 | −17.9 | −33.3 |
| Tolmetin | −14.2 | −29.5 | −21.9 |
| Zomepirac | −30.0 | −44.7 | −41.2 |