The lives of babies and mothers are being saved by screening in pregnant women, according to a health board.
Routine tests were carried out on the majority of pregnant women
NHS Greater Glasgow and Clyde said its Public Health Screening Unit (PHSU) detected a number of potentially life-threatening conditions.
The unit's annual report revealed seven pregnant mothers were diagnosed HIV positive in 2006.
Uptake for routine screening for HIV, rubella, hepatitis B and syphilis stood at 95%.
Dr Emilia Crighton, PHSU clinical lead, said: "While the numbers detected are small, the impact is huge.
"Diagnosing mum before the baby is born means we can do a great deal to avoid HIV being transmitted to the baby."
Newborn bloodspot screening tests for phenylketonuria (PKU), congenital hypothyroidism and cystic fibrosis (CF).
Dr Crighton added: "If PKU is left untreated it can cause irreversible brain damage but if the condition is detected and treated, the baby is very likely to develop normally."
The PHSU runs eight separate screening programmes, from cancer to childhood deafness.
In 2006, a total of 16 cases of cervical cancer were detected by screening.
In April 2009, NHS Greater Glasgow and Clyde said it expected to implement the Scottish Bowel Screening Programme.