Intermediate
Technical
IVT
unsatisfactory specimen
Blood spot specimen that fails to meet quality criteria for accurate analysis, requiring recollection.
Full Definition
An unsatisfactory specimen is a dried blood spot that does not meet established quality standards for newborn screening analysis due to factors such as insufficient blood volume, contamination, improper collection technique, or degradation during transport or storage. Common causes include incomplete saturation of filter paper circles, clotting before application, exposure to extreme temperatures, or collection outside the optimal age window. Such specimens require recollection to ensure reliable screening results.
Usage
Usage note: Prefer over 'inadequate' or 'rejected' in formal screening terminology.
In Context
- "The laboratory classified the specimen as unsatisfactory due to insufficient blood saturation." — Laboratory report
- "Hospital staff received training to reduce unsatisfactory specimen rates." — Quality improvement plan
Also known as
inadequate specimen
rejected specimen
Contrasted with
satisfactory specimen
acceptable specimen
Don't confuse with
hemolyzed specimen
contaminated specimen