Table 2. S/P ratios (ELISA OD values and the status Johne’s disease in animals.

S No.	Calculated value of S/P Ratio	Johne’s disease status
1	0.00–0.09	Negative (N)
2	0.10–0.24	Suspected or Borderline (S)
3	0.25–0.39	Low Positive (LP)
4	0.4–0.99	Positive (P)
5	1.0–10.0	Strong Positive (SP)