Serum or Plasma Mass Concentration of Iron-Glycine Glycine (analyte-specific marker, likely related to iron-binding proteins or metabolic intermediates)
This test measures the amount of a specific iron-related substance in your blood, often used to assess iron metabolism or detect metabolic disturbances.
["This test helps evaluate how your body processes iron and certain metabolic pathways."]
Key facts at a glance
- LOINC
- 58914-3
- Short code
- ASPNG
- Synonyms
- A niger IgG Ser-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST) - red-top or gold-top
- Units
- N/A
- Ref low
- 27
- Ref high
- 39
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 1 years
- Method
- Enzyme Immunoassay (EIA) / ImmunoCAP
- CPT
- 86606
- SNOMED
- 122496003
- Specimen volume
- 1-2 mL serum
- Stability
- Stable for 7 days at 2-8°C; for longer storage, freeze at -20°C or below
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 24–72 hours
- Order
- routine
What This Test Measures
The test detects the mass concentration of a particular iron-glycine-related compound in your blood sample. This may involve measuring iron-binding proteins or intermediates in metabolic processes, though the exact substance is not a standard clinical marker. The method used could include high-performance liquid chromatography (HPLC) or immunoassay techniques to quantify this analyte accurately.
Why It Might Be Ordered
Your healthcare provider may order this test if you have symptoms or conditions related to iron metabolism, such as unexplained fatigue, anemia, or suspected metabolic disorders. It could also be part of a broader evaluation for genetic or biochemical imbalances.
Common Uses and Indications
This test may be used in research or specialized clinical settings to investigate iron-related metabolic pathways, detect rare genetic conditions, or assess complex biochemical interactions. It is not a routine screening test for most patients.
What to Expect Before the Test
No special preparation is typically required for this test. You may have a blood draw, where a small amount of blood is taken from a vein in your arm. If you are using blood thinners, inform your healthcare provider beforehand.
Reference range
Negative: <27 mg/L; Equivocal: 27-39 mg/L; Positive: ≥40 mg/LN/A
No special preparation required. Patient should be well-hydrated prior to venipuncture.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
What does an abnormal result mean?
How often should I get this test?
Can I eat or drink anything before this test?
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 15, 2026. · Read our editorial policy