Hemoglobin A1c (HbA1c) with 24-hour urine collection for total urinary hemoglobin
This test measures your average blood sugar levels over the past 2–3 months and checks for hidden hemoglobin in your urine over a full day.
Helps track long-term blood sugar control and detects potential blood loss or hematuria (blood in urine).
Key facts at a glance
- LOINC
- 71863-5
- Short code
- Hgb F MFr.DF Bld Kleih Betke
- Synonyms
- Hgb F MFr.DF Bld Kleih Betke
- Category
- hematology
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Ref low
- 12
- Ref high
- 17.5
- Critical range
- 7 N/A – 20 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- kleihauer-betke
- CPT
- 85018
- SNOMED
- 900000000000003004
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters for Blood Sugar Control
HbA1c reflects your blood sugar levels over time, giving doctors a clearer picture of how well your diabetes is managed. It’s a key tool for adjusting treatments like diet, exercise, or medication.
Understanding Hidden Blood Loss or Urinary Issues
The 24-hour urine test for hemoglobin checks for microscopic blood in your urine, which could signal kidney problems, urinary tract infections, or other conditions. This helps prevent missed diagnoses.
How the Test Works
Your blood is tested for HbA1c using standard methods (like immunoassay or chromatography). Your urine is collected over 24 hours to measure total hemoglobin content, often via colorimetric or turbidimetric techniques.
What Normal Results Mean
A normal HbA1c result (typically <5.7%) suggests good blood sugar control, while elevated levels may indicate poor management. Elevated urinary hemoglobin may require further evaluation by your doctor.
Reference range
Adult males: 13.5-17.5 g/dL; Females: 12.0-16.0 g/dLN/A
No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
HbA1c is essential for diagnosing and managing diabetes, as it provides a long-term snapshot of blood sugar trends. Elevated urinary hemoglobin can signal kidney dysfunction, urinary tract bleeding, or other systemic issues, prompting additional tests or treatments.
Short name
HbA1c + 24h Urinary Hemoglobin
Frequently asked questions
What does an abnormal HbA1c result mean?
Why is urinary hemoglobin checked in this test?
Can diet or exercise affect HbA1c results?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy