Immunodeficiency
Immunodeficiency means the immune system is weakened and cannot fight infections well. It may be inherited or caused by illness or medications. Treatment depends on the cause.
Available Tests
TREC/KREC PCR is a medical test that uses PCR (Polymerase Chain Reaction) to quantify T-cell receptor excision circles (TRECs) and kappa-deleting recombination excision circles (KRECs) in biological samples, often dried blood spots from newborns.