Table 6. Estimation of IAC amplification in blood specimens from different clinical groups.

IAC	G1	G2	G3	G4	G4
Amplification	n = 16	n = 63	n = 35	Nb UCB	Nb PB
				n = 12	n = 19
Median Ct	19.31	18.20	18.72	19.97	19.24
75th percentile	20.11	18.43	19.01	21.00	19.86
25th percentile	18.37	18.01	18.44	19.10	18.88
Threshold Ct for outlier values	22.72	19.05a	19.86	23.86	21.32
Media Ct	19.24	18.15	18.70	20.22	19.20

^aSample PCC 331: qPCR positive, 0.69 log₁₀ par. eq./mL, IAC Ct 19.20.

Nb: Newborn; UCB, umbilical cord blood; PB: peripheral blood.