Genetic Testing Tests

Acid Lipase Disorder (Wolman Disease) Test in Dubai and across the UAE to diagnose a rare but life-threatening inherited metabolic condition. This test detects deficiencies in the **lysosomal acid lipase (LAL) enzyme**, confirming Wolman disease — a severe form of lysosomal acid lipase deficiency (LAL-D) that affects infants and leads to rapid organ damage. Results available within 15–20 days.

Overview

The Acid Lipase Disorder (Wolman Disease) Test measures the activity of the **lysosomal acid lipase (LAL) enzyme** in white blood cells or dried blood spots. Wolman disease is a rare autosomal recessive disorder caused by mutations in the *LIPA* gene, leading to near-complete loss of LAL enzyme function. Without this enzyme, fats (cholesteryl esters and triglycerides) accumulate in vital organs like the liver, spleen, adrenal glands, and intestines. This progressive buildup causes liver failure, malnutrition, and adrenal calcification, typically appearing in the first weeks of life. Due to its severity, early diagnosis is critical. Results are typically available within 15–20 business days after sample receipt at a specialized reference laboratory.

Why You Need This Test

• Confirm suspected Wolman disease in newborns or infants with failure to thrive.
• Evaluate unexplained hepatomegaly (enlarged liver), splenomegaly, or adrenal calcification.
• Diagnose severe malabsorption, chronic diarrhea, or vomiting in early infancy.
• Assess infants with jaundice, liver dysfunction, or low albumin.
• Follow-up abnormal newborn screening results suggestive of metabolic disorders.
• Provide definitive diagnosis before considering treatments like enzyme replacement therapy (ERT) or hematopoietic stem cell transplant (HSCT).
• Available with home blood collection service across Dubai, Abu Dhabi, Sharjah, and all Emirates.

Symptoms & Risk Factors

Common Symptoms in Infants

• Poor weight gain or failure to thrive despite adequate feeding
• Severe diarrhea or fatty stools (steatorrhea)
• Vomiting, abdominal distension
• Enlarged liver and spleen (hepatosplenomegaly)
• Jaundice and liver dysfunction
• Adrenal gland calcification (seen on imaging)
• Progressive lethargy, weakness, or feeding difficulties

Risk Factors

• Family history of Wolman disease or unexplained infant death
• Consanguineous parents (common in certain populations in the UAE and Middle East)
• Known carrier status of *LIPA* gene mutation in parents
• Ethnic predisposition: higher incidence in Iranian Jewish, Arab, and South Asian communities
• Abnormal metabolic screening or elevated liver enzymes in newborns

How the Test Works

Wolman disease results from deficient activity of the lysosomal acid lipase (LAL) enzyme, which is essential for breaking down fats inside cells. The test evaluates how well this enzyme functions in white blood cells (leukocytes) or dried blood spots.

• Step 1 — Sample collection: a small blood sample is drawn from a vein (infants may require specialized pediatric phlebotomy).
• Step 2 — Sample type: fresh blood in anticoagulant tube (for leukocyte assay) or dried blood spot (DBS) on filter paper.
• Step 3 — Transport: samples shipped under controlled conditions to an international reference lab.
• Step 4 — Enzyme assay: LAL enzyme activity is measured using fluorometric or mass spectrometry methods.
• Step 5 — Genetic correlation: if enzyme deficiency is confirmed, DNA testing (*LIPA* gene sequencing) may follow.
• Step 6 — Results: delivered securely within 15–20 business days.

This test is crucial for early diagnosis and intervention in a rapidly progressive, often fatal condition.

Sample Type

• We take: Whole blood (EDTA or heparin) for leukocyte enzyme assay or dried blood spot (DBS) on filter paper
• Volume: 2–5 mL blood (depending on age); 3–5 spots for DBS (each ≥12 mm)
• Container: lavender-top tube (EDTA) or specialized DBS card
• How it’s collected: venous blood draw by trained pediatric phlebotomist; home collection available
• Storage & Transport: refrigerated (2–8°C) if testing locally; DBS dried and shipped at room temperature
• Note: hemolyzed or clotted samples may be rejected; prompt shipping is essential

Risks & Safety

• Minimal risk — standard blood draw, similar to routine lab tests.
• Slight pain or bruising at the needle site, especially in infants.
• No fasting or special preparation required.
• Safe for newborns and infants when performed by experienced staff.

Result Interpretation

Normal Range

• Normal LAL enzyme activity: >1.0 nmol/h/mg protein (lab-dependent)
• Levels vary slightly by method and lab; comparison to controls is critical

Deficient Activity

• Severely reduced or absent LAL activity confirms diagnosis of Wolman disease
  • Typically <5–10% of normal activity
  • Correlates with rapid clinical progression

Partial Deficiency

• May indicate cholesteryl ester storage disease (CESD), a milder, later-onset form of LAL-D
• Requires further genetic testing and clinical evaluation

Consequences if Untreated

• Progressive liver failure leading to cirrhosis and death within 6–12 months
• Malnutrition and growth failure due to fat malabsorption
• Adrenal insufficiency from gland destruction and calcification
• Life-threatening infections due to weakened immunity
• Multi-organ damage affecting spleen, intestines, and vascular system
• Without treatment, Wolman disease is fatal in infancy

Factors Affecting Test Results

• Sample quality: hemolysis, clotting, or delays in transport can affect enzyme activity
• Type of sample: leukocytes are preferred; plasma testing is not reliable for diagnosis
• Recent blood transfusion: can mask enzyme deficiency (donor cells may have normal activity)
• Lab methodology: must use validated assays for LAL — not all labs offer this rare test
• Genetic variants: some mutations may allow residual enzyme activity, altering severity

FAQs

Limitations

• Test requires specialized international labs — not performed locally in most UAE facilities.
• Turnaround time is longer (15–20 days) due to overseas processing.
• Enzyme testing alone may not distinguish between Wolman and CESD — genetic testing is often needed.
• False negatives possible after blood transfusion.
• Requires expert interpretation in clinical context — not a screening tool for general population.

Book Your Acid Lipase Disorder (Wolman Disease) Test Today

Early diagnosis saves lives. If your infant shows signs of metabolic distress, get a definitive answer quickly with advanced enzyme testing.

• Home Blood Collection Available (Dubai, Abu Dhabi, Sharjah & all Emirates)
• Expert Pediatric Phlebotomy with Minimal Discomfort
• Results in 15–20 Days
• Price: AED 2,000
• ✅ International Reference Lab | Gold-Standard Enzyme Assay
• 📦 Secure Sample Shipping & Tracking
• 🔒 Confidential Results & Genetic Counseling Support

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Lactose Primary Intolerance - Genetic Characterization

genetic lactose intolerance test for individuals in Dubai and across the UAE who experience bloating, cramps, or diarrhea after dairy. By analyzing the LCT gene, this test provides a lifetime-accurate answer about lactase persistence vs. non-persistence.

Overview

The Lactose Primary Intolerance – Genetic Characterization test is a DNA-based analysis that examines variants in the LCT gene, which regulates the lactase enzyme. It confirms primary (genetic) lactose intolerance without elimination diets or invasive procedures. Standard venipuncture is used; results are typically available within 37 days.

Symptoms & Risk Factors

Common Symptoms

• Bloating and gas after dairy (fermentation of undigested lactose).
• Abdominal cramps and post-dairy discomfort.
• Diarrhea within 30 minutes to 2 hours after consuming milk or cheese.
• Nausea or queasiness after dairy intake.
• Gurgling/intestinal sounds due to gas and fluid movement.

Risk Factors

• Ethnic background: higher prevalence in Middle Eastern, Asian, African, and Mediterranean populations.
• Age: natural decline of lactase after childhood.
• Family history: hereditary tendency to lactase non-persistence.
• Digestive disorders: celiac disease, Crohn’s disease, or IBS may worsen symptoms.

How the Test Works

This test detects LCT gene variants (commonly the rs4988235 regulatory variant) associated with lactase persistence or non-persistence.

• Step 1 — Appointment: visit a partner lab or use home collection (Dubai, Abu Dhabi, Sharjah, and other Emirates).
• Step 2 — Blood draw: a trained phlebotomist collects a whole blood sample (usually under 5 minutes).
• Step 3 — DNA analysis: certified lab performs DNA extraction and genotyping.
• Step 4 — Results: a secure report is delivered within 37 days.

No lactose challenge is required — only a simple blood test.

Specimen (Sample Type)

• Required sample: EDTA whole blood (EDWB)
• Volume: 10 mL
• Collection method: standard venipuncture

Risks & Safety

• Mild pain or bruising at the needle site (temporary).
• Dizziness or fainting (uncommon).
• Very low risk of infection with sterile technique.
• Genetic test safety: no radiation or invasive procedures; only DNA analysis.

About Lactase (LCT Gene)

Lactase is the small-intestinal enzyme that digests lactose in dairy. In genetically predisposed individuals, lactase levels decline after childhood (lactase non-persistence). Undigested lactose ferments in the colon, producing gas and fluid shifts that cause bloating, cramps, and diarrhea.

Result Interpretation

Genotype Guide

• CC: lactase persistence — likely to digest lactose well into adulthood.
• CT: reduced persistence — potential mild/partial intolerance.
• TT: non-persistence — genetically predisposed to primary lactose intolerance.

Consequences if Untreated

• Persistent GI symptoms affecting daily life and comfort.
• Calcium & vitamin D shortfalls if dairy is avoided without suitable alternatives.
• Low bone density / osteoporosis risk over time.
• Misdiagnosis risk (e.g., IBS) without genetic confirmation.

Factors Affecting Symptoms

• Gut health & inflammation (infections, dysbiosis) can amplify symptoms.
• Dairy type & quantity: yogurt and hard cheeses may be better tolerated than milk.
• Probiotics & microbiome composition influence digestion.
• Age & hormones can affect tolerance thresholds.

Related Tests

• Food Intolerance Test (IgG-based)
• Hydrogen Breath Test for Lactose
• Celiac Disease Panel
• Vitamin D & Calcium Test

FAQs

Limitations

• This test assesses genetic predisposition for lactase persistence/non-persistence; it does not diagnose milk protein allergy or other GI conditions.
• Clinical correlation is advised; consider functional tests (e.g., hydrogen breath test) if symptoms persist despite results.

Book Your Lactose Primary Intolerance – Genetic Characterization Test Today

Don’t guess — know your genetics and take control of your digestive health.

• Home Sample Collection Available (Across Abu Dhabi, Dubai, Sharjah, Ajman, Ras Al Khaimah, Umm Al Quwain, Fujairah)
• Fast, Accurate, Confidential Results in 37 Days
• ✅ Certified Labs
• 👩‍⚕️ Licensed Technicians
• 🔒 Secure Reporting