| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how long are ppd results good for | 0.05 | 0.3 | 4648 | 95 |
| how long are ppd test good for | 0.56 | 0.3 | 8592 | 4 |
| how long is ppd good for | 0.1 | 0.6 | 9430 | 12 |
| ppd test good for how long | 1.64 | 0.1 | 1311 | 23 |
| how long are ppd tests valid for | 0.99 | 0.3 | 1471 | 20 |
| how long is ppd read good for | 0.66 | 0.3 | 3269 | 40 |
| how long is ppd valid | 0.56 | 0.9 | 8385 | 36 |
| how long does ppd last | 1.16 | 0.4 | 8421 | 2 |
| how long is ppd good after opening | 0.03 | 1 | 5380 | 57 |
| how long does ppd test last | 1.77 | 0.7 | 675 | 98 |
| how long does ppd and ppa last | 0.88 | 0.6 | 7950 | 36 |
| how long to read ppd results | 1.93 | 0.3 | 212 | 93 |
| how long does pppd last | 0.69 | 0.4 | 1212 | 97 |
| how long after ppd is it read | 0.19 | 0.8 | 25 | 13 |
| how soon can a ppd be repeated | 0.41 | 0.9 | 8336 | 87 |
| ppd expires after opening | 0.93 | 0.7 | 4651 | 10 |
| will ppd go away | 0.75 | 0.2 | 8112 | 1 |
| expiration after opening ppd | 0.2 | 0.9 | 3889 | 23 |
| when does ppd vial expire | 1.5 | 1 | 4333 | 64 |
