High response for C5DC in neonatal screening - WKB268555

SYMPTOMS

• High response for C5DC in neonatal screening patient samples (MRM transition: 276.2>85.0)
• Other analytes in neonatal screening in range
• QC samples from PerkinElmer NeoBase kit look good
• Problem appears after routine service on nitrogen generator

ENVIRONMENT

• Xevo TQ-S micro

CAUSE

Contamination from the nitrogen generator

FIX or WORKAROUND

Ask PEAK Scientific to service the nitrogen generator.

ADDITIONAL INFORMATION