how long is ppd good for

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
how long is ppd good for	0.24	1	6710	93	24
how	1.99	0.4	7309	21	3
long	0.71	0.8	8200	23	4
is	0.65	1	5045	48	2
ppd	1.55	0.3	2737	82	3
good	1.01	0.6	8837	26	4
for	1.48	0.4	2673	34	3

Keyword	CPC	PCC	Volume	Score
how long is ppd good for	1.36	0.7	9801	1
how long is ppd good for once drawn up	1.79	0.6	7446	55
how long is ppd good for once opened	0.96	0.2	5252	57
how long is a ppd vial good for once opened	1.45	1	1358	48
how long is ppd test good for	0.86	0.2	8885	89
how long is chest xray good for positive ppd	1.48	0.1	7068	64
how long is a negative ppd test good for	0.98	1	5361	19
how long is a ppd skin test good for	0.47	0.4	5103	81
how long is ppd good after opening	1.37	0.4	9812	45
how long are ppd results good for	0.29	0.2	4705	100
how long is ppd read good for	1.31	0.9	9526	87
how long can ppd last	2	0.3	6961	30
how long is ppd valid	1	0.3	1191	84
how long does ppd and ppa last	1.7	0.4	7772	23
how long are ppd tests valid for	0.94	0.9	3390	60
how long does ppd test last	0.82	0.3	5394	23
how long does pppd last	0.83	0.7	9118	43
how long after ppd is it read	0.01	0.7	856	51
how long to read a ppd	1.46	1	301	18
how long can ppd be left unrefrigerated	1.01	1	589	66
how soon can a ppd be repeated	2	0.3	5933	100
expiration after opening ppd	0.88	0.1	3389	58
can ppd be read after 72 hours	1.65	0.6	5462	48
ppd expires after opening	1.49	0.9	7414	42