Lab test interpretation
Fern Phenomenon in Gynecological Smear Microscopy
The fern phenomenon (cervical mucus arborization) in a gynecological smear from a 42-year-old woman, indicating ovulation and high estrogen levels.
Tag
Hormones
Lab test interpretation
Analyzer Calibration Failure in TSH Testing
Analysis of a laboratory error: systematic analyzer calibration failure led to falsely low TSH results and hyperdiagnosis of thyrotoxicosis.
Lab test interpretation
Saliva Crystallization: The Fern Sign in Ovulation
The phenomenon of saliva crystallization and the fern sign on microscopy of a native smear: connection with estrogen levels and ovulation detection.
Lab test interpretation
Saliva Fern Sign for Ovulation Detection: Microscopic View
Evaluating the fern sign phenomenon in dried saliva for ovulation detection: microscopic images during fertile and non-fertile days of the menstrual cycle.
Lab test interpretation
Diagnosing Pediatric Arterial Hypertension: An Algorithm
An algorithm for the differential diagnosis of secondary arterial hypertension in children, including laboratory and instrumental search criteria.
Lab test interpretation
Laboratory Diagnosis of Hyperthyroidism: An Algorithm
An algorithm for laboratory diagnosis of hyperthyroidism: evaluating TSH, free T4, T3, and anti-thyroid peroxidase antibodies for differential diagnosis.