RELA Homepage

RELA - IFCC External Quality assessment scheme for Reference Laboratories in Laboratory Medicine

This site gives you all the information you will need for participating in the RELA scheme.

Time schedule for RELA 2026

Announcement: October 15th, 2025
Deadline for ordering: November 30th, 2025
Shipment of samples: January 2026
Deadline for transmission of results: August 31th, 2026
Reporting results to participants: October 2026
Publishing results on this website: November 2026

Please refer to the navigation area on the left to (for instructions see our new RELA web manual)
- register or log in
- order the survey
- entering your results
- get the evaluation of past surveys
The whole RELA process is described in detail in the IFCC-RELA-EQAS procedure manual.

Offered measurands:
Metabolites and substrates (META): total cholesterol, total glycerol, creatinine, uric acid, urea, glucose, total bilirubine
Electrolytes (ELEC): sodium, potassium, chloride, calcium, lithium, magnesium
Enzymes (ENZY): ALT, AP, AST, CK, LDH, GGT, amylase, pancreatic amylase
Glycated hemoglobins (GLYC): HbA1c
Proteins (PROT): total protein
Hormones (HORM): aldosterone, cortisol, progesterone, testosterone, estradiol-17ß, estriol, 17-OH-progesterone
Thyroid hormones (THYR): total thyroxine (TT4), total tri-iodthyronine (TT3)
Therapeutic drugs (THER): digoxin, digitoxin, theophylline, valproic acid
Vitamins (VITA): 25-OH-Vitamin D2, 25-OH-vitamin D3
Hemoglobin (HEMO): total hemoglobin